Interpret a quadratic graph | Quadratic functions & equations | Algebra 1 | Khan Academy
A1 A2 B1 B2 C1 C2
term
US / tɜ:m /
•UK / tɚm /
- noun
- Conditions applying to an agreement, contract
- Length of time something is expected to happen
- Fixed period of weeks for learning at school
- The (precise) name given to something
- verb
- To call; give a name to
forward
US / 'fɔ:wəd /
•UK / ˈfɔrwəd /
- adjecitve
- Toward what is ahead; in front
- Acting in a socially aggressive manner; pushy
- adverb
- Toward the front in place; in front
- Toward a future time; to a more advanced state
- verb
- To send something to another address or person
one
US / wʌn /
•UK / wʌn /
- pronoun
- You; we; people in general; someone
- The thing or person previously referred to
- adjecitve
- Used to refer to people generally
- Being a strong example of (something mentioned)
- number
- Number 1
ones
US / wʌnz /
•UK / wʌnz /
- number
- Number 1, a single person or thing
five
US / faɪv /
•UK / faɪv /
- number
- 5
you
US / jʊ /
•UK / ju /
- pronoun
- Person someone is speaking or writing to
- Person or people in general
fruit
US / fru:t /
•UK / frut /
- noun
- Result or product of something
- Food that grows on a tree or bush, usually sweet
- verb
- To grow e.g. apples, bananas, as a plant or a tree
this
US / ðɪs /
•UK / ðɪs /
- adjecitve
- Used to indicate something already been discussed
- Used to indicate something happening around now
- adverb
- An indication by a physical motion or gesture
- A specific amount of
- determiner
- Person, thing, or idea near you
- pronoun
- Person, thing that has already been discussed
let
US / let /
•UK / lɛt /
- verb
- To allow someone to do something
- Introducing a suggestion to do something together
- To rent a house, etc. to others
little
US / 'lɪtl /
•UK / ˈlɪtl /
- adjecitve
- Being short in length of time
- Not great in size, amount, or degree; small
- Being very young or younger than others
- adverb
- By an amount or degree that is not very much
- Not often; rarely
- noun
- A person's name
the
US / ðə /
•UK / ðə /
- article
- Used to refer to something already mentioned
- Used to show there is only one of something
- determiner
- Used to describe all of a family
model
US / ˈmɒdl /
•UK / ˈmɑ:dl /
- adjecitve
- Being an excellent example of
- noun
- Person who wears fashion to show it to the public
- A small scale copy of a full original
- verb
- To wear and display clothes at a fashion show
- To make a small scale copy of a full original
meter
US / ˈmi:tə(r) /
•UK / ˈmitɚ /
- noun
- Unit of length equal to 100 cm or about 39 inches
- Device for measuring things e.g. gas
- Device to put money into to rent a parking place
- Rhythm of a poem
- verb
- To measure water, etc. when it has to be paid for
could
US / kəd /
•UK / kʊd /
- other
- Past form of 'can' to mean have ability
- Used to ask for something politely, or to offer
almost
US / 'ɔ:lməʊst /
•UK / ˈɔlˌmost, ɔlˈmost /
- adverb
- Only a little less than, nearly, not quite
before
US / bɪˈfɔ:(r) /
•UK / bɪˈfɔr,-ˈfor /
- adverb
- At a time earlier than the present; previously
- conjunction
- In advance of something happening
- preposition
- In front of someone or something
have
US / həv /
•UK / hæv /
- verb
- To drink, smoke, eat or use something
- To experience the effects of something
- To organize an event, or join in an activity
- To own, possess, or hold something
- To cause to happen or produce a particular effect
choice
US / tʃɔɪs /
•UK / tʃɔɪs /
- adjecitve
- Of good quality or taste; desirable
- noun
- Decision between two or more possibilities
see
US / si: /
•UK / si /
- verb
- To go on a date with someone
- To predict whether something is, or will be true
- To understand what someone says
- To use your eyes to look at something
- To visit a place often for sightseeing or pleasure
- To visit or meet with someone
- To find out by waiting or looking
- To watch (a game, movie or TV show)
air
US / eə(r) /
•UK / er /
- noun
- Mixture of gases around the earth that we breathe
- A person's manner intended to impress others
- verb
- To expose to the outside, to dry or freshen
- To broadcast a TV or radio show
- To open a subject to discussion and debate
bear
US / bɛː /
•UK / bɛr /
- noun
- Large brown animal with fur that lives in forests
- Someone who expects stock market to fall
- verb
- To accept (responsibilities or duties)
- To give birth to a child; to produce fruit
- To accept or suffer the weight of difficulties
- To keep moving left or right while going forward
- To show (sign of something)
- To support the weight of something, e.g. a bridge
bit
US / bɪt /
•UK / bɪt /
- noun
- Device put in a horse's mouth to control it
- Small piece of something
- verb
- (E.g. of fish) to take bait and be caught
look
US / lʊk /
•UK / lʊk /
- noun
- Person's beauty or physical attractiveness
- Particular style of dress, clothes, or appearance
- The way someone, something appears to be
- Act of searching for or examining something
- verb
- To appear to be; seem
regular
US / ˈregjələ(r) /
•UK / ˈrɛɡjəlɚ /
- adjecitve
- Having an equal amount of space or time in between
- Occurring or being done frequently
- Being normal, usual, or average
- noun
- Customers who frequently visit a place
- Soldier who has a permanent job in the army
throw
US / θrəʊ /
•UK / θroʊ /
- noun
- Arm movement to make a thing fly through the air
- Loose cloth or blanket (usually over a chair)
- Forcibly putting someone on the ground
- verb
- To use your arm to make something fly in the air
- To move part of your body suddenly and forcefully
- To confuse or upset someone
- (E.g. judo) to forcibly put someone on the ground
- To put something somewhere suddenly and roughly
work
US / wɜ:k /
•UK / wɚk /
- adjecitve
- Activity completed in order to make money
- noun
- The product of some artistic or literary endeavor
- Everything created by an author, artist, musician
- Activity you do in order to make money
- Place of employment
- Final product or result of a some labor or effort
- verb
- To bring into a specific state of success
- To be functioning properly, e.g. a car
- To do your job in your company or workplace
- To make an effort to do something
- To operate a machine or device
clearly
US / ˈklɪəlɪ /
•UK / ˈklɪrlɪ /
- adverb
- In a way that is easy to understand; obviously
all
US / ɔ:l /
•UK / ɔl /
- adverb
- Completely; totally
- determiner
- Being every one of something
- pronoun
- 100% of something; the complete amount
its
US / ɪts /
•UK / ɪts /
- adjecitve
- Referring to or belonging to ‘it’
- determiner
- Of something; belonging or related to something
- other
- Possessive form of “it”
they
US / ðeɪ /
•UK / ðe /
- pronoun
- Two or more people, animals, or things
case
US / keɪs /
•UK / kes /
- noun
- Container used to carry things, e.g. clothes
- Set of facts about a crime
- Set of facts about an event
- Example or instance of something
- verb
- To find out about a place, as in planning to steal
mean
US / mi:n /
•UK / min /
- adjecitve
- Being good at
- Nasty; unkind
- Not liking to spend money; cheap; stingy
- noun
- Average of a set of numbers
- verb
- To express a particular idea or thought
- To intend to do something in particular
- To have a particular meaning or value
ladder
US / 'lædə(r) /
•UK / ˈlædɚ /
- noun
- Series of levels to go up in society or business
- Device with a series of steps used for climbing
she
US / ʃɪ /
•UK / ʃi /
- pronoun
- Female person or animal mentioned before
- (Refers to female person mentioned before)
select
US / sɪ'lekt /
•UK / sɪˈlɛkt /
- verb
- To choose a suitable thing from a group
right
US / raɪt /
•UK / raɪt /
- adjecitve
- Correct or true
- The south side of you looking at the rising sun
- adverb
- Exactly in a place or time
- Being appropriate for a particular event
- In a straight or direct manner
- noun
- Something you are legally or morally allowed to do
- Ideal of what is just and good
- Political view based on conservatism
- verb
- To fix something previously wrong or unjust
- To make upright, as a boat that has turned over
ground
US / graʊnd /
•UK / ɡraʊnd /
- noun
- Connection of electrical equipment to earth
- Place where people play particular sports
- Solid surface of the earth that we stand on
- verb
- To break (coffee, etc.) into tiny bits with machine
- To make loud jarring noise by pressing hard
- To make sharp or smooth through friction
- To press together with force making a sound
- To punish someone by not allowing them to go out
- To hit the bottom
- (Of boat) to hit the bottom so it cannot move
- To prevent a plane from taking off
- To place the ball over the goal line in rugby
happen
US / 'hæpən /
•UK / ˈhæpən /
- verb
- To take place or occur
yeah
US / jeə /
•UK / ˈjɛə, ˈjæə, jɛ- /
- exclamation
- Another way of saying 'yes'
ball
US / bɔ:l /
•UK / bɔl /
- noun
- Large dance where people dress formally
- Small round object often used in a game or sport
seconds
US / 'sekəndz /
•UK / 'sekəndz /
- other
- Units of time; one sixtieth of a minute
- Short periods of time you wait for someone
- verb
- To agree to support a proposal at a meeting
down
US / daʊn /
•UK / daʊn /
- adjecitve
- Being sad, sick, or unhappy
- Not operating, working, or functioning as expected
- adverb
- In a sitting or lying position
- Towards or on the ground, floor, or bottom
- Written or copied onto a piece of paper or book
- noun
- A period of play in American Football
- The soft, smooth hairs that cover a bird's body
- preposition
- Along something's path, course, or direction
- Going from a higher position to a lower position
- verb
- To eat or drink very quickly and without stopping
then
US / ðen /
•UK / ðɛn /
- adverb
- A time that is not now
- Following another thing in time or arrangement
- Following on reasonably from what was just stated
- At that time, not now
get
US / ɡet /
•UK / ɡɛt /
- verb
- To become affected by illness or disease
- To begin to feel or understand an emotion or idea
- To send or bring someone or something home, etc.
- To go somewhere to obtain something
- To (cause to) do a particular thing
- To obtain, receive or be given something
- To currently have
- To prepare for use
- To understand something being said or read
first
US / fɜ:st /
•UK / fɚst /
- adjecitve
- 1st; Coming before all others in time or place
- noun
- Something that has not happened before
- Position of the winner of a competition
roughly
US / ˈrʌfli /
•UK / ˈrʌflɪ /
- adverb
- Approximately; (of numbers) about; around
- In a manner that is violent or not careful
- In an inexact, imprecise or violent way
- In a basic, simple manner
about
US / ə'baʊt /
•UK / əˈbaʊt /
- adverb
- To be ready to; going to
- Nearly; approximately; roughly
- Near; next to; close to
- In every direction; in the area of
- preposition
- Concerning or of (a topic)
like
US / laɪk /
•UK / laɪk /
- adjecitve
- Being equal in status or kind to something else
- Similar; the same
- adverb
- For example
- preposition
- Used as a filler; used to ad emphasis
- In a way similar to the way something is done
- Such as; for example
- verb
- To want to
- To find something pleasing; to prefer something
second
US / 'sekənd /
•UK / ˈsɛkənd /
- adjecitve
- 2nd; the one following first
- noun
- Unit of time; one sixtieth of a minute
- Short period of time that you wait for someone
- (Do) soon
that
US / ðæt /
•UK / ðæt, ðət /
- adjecitve
- The person or thing being talked about
- Used to identify something both the speakers know
- adverb
- Used to reinforce adjectives and adverbs
- To such a degree
- conjunction
- Used to connect a noun clause
- Used to introduce an adverbial clause
- Used to introduce a noun clause
- determiner
- Used as a noun to refer to something
- pronoun
- Referring an object far away
- Used to refer to the relative pronoun ‘which’
actually
US / ˈæktʃuəli /
•UK / ˈæktʃuəli /
- adverb
- Used to add new (often different) information
chase
US / tʃeɪs /
•UK / tʃes /
- noun
- Act of going after someone to catch them
- other
- To try very hard to get something that you want
- verb
- To go after with the intention of catching
rough
US / rʌf /
•UK / rʌf /
- adjecitve
- Causing or involving violence, force, and harm
- (Of situations) tough; difficult to get through
- Being imprecise, inexact, and not detailed
- Not gentle or not soft
- Having an uneven or not smooth surface
- Raw and natural
- (Of sea weather etc.) not calm with strong winds
- Involving or causing sudden, forceful movements
- adverb
- In a manner that is difficult, or violent
- noun
- Violent, loud, and unpleasant person
- Incomplete drawing or draft done lacking detail
- verb
- To make something less smooth
speak
US / spi:k /
•UK / spik /
- verb
- To be able to use a certain language
- To use words to tell information, express thoughts
true
US / tru: /
•UK / tru: /
- adjecitve
- Agreeing with the facts; not false; real or actual
point
US / pɔɪnt /
•UK / pɔɪnt /
- noun
- An item to be discussed
- Small spot or dot
- Fact or detail
- Feature of something
- The size of the text on a page or screen
- A certain time or stage in a process
- Certain position in time or space
- Idea or fact you try to convince people about
- Measurement of scores in a game, sport
- Sharp end of something, e.g. a pen or pin
- verb
- To face a certain direction, e.g. north
- To indicate something with your finger to others
here
US / hɪə(r) /
•UK / hɪr /
- adverb
- In this place; at this location, position or time
after
US / 'ɑ:ftə(r) /
•UK / ˈæftɚ /
- adverb
- Later than another time, or behind something
- conjunction
- Following something before
- preposition
- When an event happened or time has passed
will
US / wɪl /
•UK / wɪl /
- noun
- Desire or choice of someone
- Document saying who gets your money when you die
- Strong desire to do something; determination
- Desire to do something; strong wish to do
- other
- Used with verbs to express the future
- verb
- To leave property to someone after your death
- To use mental effort to make something happen
- Am (is, are) likely to do
- To influence someone to do something
- To make something happen by strongly wanting it
exactly
US / ɪgˈzæktli /
•UK / ɪɡˈzæktli /
- adverb
- No more and no less than; precisely
just
US / dʒʌst /
•UK / dʒʌst /
- adjecitve
- Proper or appropriate; as is deserved
- Doing or being what is right or fair
- Legally correct; having enough evidence
- adverb
- Almost; nearly
- Exactly at the time of
- Exactly (the same as, like)
those
US / ðəʊz /
•UK / ðoz /
- determiner
- The people or things we are talking about
- pronoun
- The objects far from the speaker
statement
US / ˈsteɪtmənt /
•UK / ˈstetmənt /
- noun
- Record of activity in a bank account over time
- Act or process of saying something formally
under
US / ˈʌndə(r) /
•UK / ˈʌndɚ /
- adjecitve
- In the same place as another thing, but lower
- adverb
- In a lower quantity or price than expected
- preposition
- According to the terms of an agreement or law
- Managed or controlled by the authority of
- Being of a lesser quality or amount than expected
- Influenced or affected by something or someone
- Less or lower in age, amount, size or number
ask
US / ɑ:sk /
•UK / æsk /
- verb
- To say to someone that you want something
pause
US / pɔ:z /
•UK / pɔz /
- noun
- A temporary break before continuing
- Function on a device to stop and restart it
- Sign to hold a musical note a bit longer
- verb
- To stop doing for a while before continuing
start
US / stɑ:t /
•UK / stɑrt /
- noun
- First time or place that a thing exists; beginning
- First opportunity to achieve something, e.g. a job
- Sudden action or movement because you are scared
- other
- Beginning of something in place or time
- verb
- To do, be or happen for the first time; begin
- To turn something on
for
US / fə(r) /
•UK / fɔr,fə /
- preposition
- Used to show the purpose, or need of something
through
US / θru: /
•UK / θru /
- adjecitve
- having finished using or doing something
- adverb
- From the beginning of something until the end
- preposition
- Over, in, across an entire thing or place
- Allowing you to pass between, or to
- By a particular way or process; by the use of
time
US / taɪm /
•UK / taɪm /
- noun
- Speed at which music is played; tempo
- Point as shown on a clock, e.g. 3 p.m
- Number of hours, minutes needed to do something
- Occasion when something happens
- Period or occasion that something occurred
- Period in history or the past
- Something measured in minutes, hours, days, etc.
- How long an event takes; duration
- verb
- To check speed at which music is performed
- To choose a specific moment to do something
- To measure how long an event takes, e.g. a race
- To schedule something to occur at a specific moment
couple
US / 'kʌpl /
•UK / ˈkʌpəl /
- noun
- Two people in a romantic relationship
- Two of something; two people; a pair
- verb
- To join something to something else
- (Two animals) to engage in sexual relations
- To put two people or things together
something
US / ˈsʌmθɪŋ /
•UK / ˈsʌmθɪŋ /
- adverb
- In some degree or measure
- noun
- a person or thing of some value or consequence
- pronoun
- Thing that is not yet known or named
- Approximately
height
US / haɪt /
•UK / haɪt /
- noun
- Distance of something from the bottom to the top
two
US / tu: /
•UK / tu /
- number
- 2
and
US / ənd /
•UK / ənd, ən,ænd /
- conjunction
- Used to refer to two or more things
- Plus; in addition; on top of that
- Used to introduce an action that follows another
another
US / əˈnʌðə(r) /
•UK / əˈnʌðɚ /
- adjecitve
- One more, but not this
- determiner
- One more added
- pronoun
- One more (thing)
think
US / θɪŋk /
•UK / θɪŋk /
- verb
- To have an idea about something without certainty
- To have an idea, opinion or belief about something
anything
US / ˈeniθɪŋ /
•UK / ˈɛniˌθɪŋ /
- pronoun
- A thing of any kind
from
US / frəm /
•UK / frʌm, frɑm,frəm /
- preposition
- Starting at a particular place, time or level
out
US / aʊt /
•UK / aʊt /
- adverb
- No longer stylish (e.g. fashion)
- Away from home, business, or the usual place
- In a direction/movement away from inside or center
- noun
- Act when a batter cannot continue playing
- verb
- To tell people a secret
over
US / 'əʊvə(r) /
•UK / ˈovɚ /
- adverb
- Finished; no longer happening
- Towards the ground/away from a standing position
- noun
- A set of six consecutive balls bowled in cricket
- other
- Finished
- preposition
- Showing the relation when a thing is above another
- On or covering something
- Above or across something
- More than you need
- From one side to the other
- In the direction of; toward
would
US / wʊd /
•UK / wʊd /
- other
- Used to indicate something imagined
- Used to ask or request something politely
- Verb used to indicate possibility, request etc.
- Used to indicate a preference
- Used to indicate a reaction
- Indicates something that occurred repeatedly
- Used to indicate willingness or ability to do
can
US / kæn /
•UK / kən,kæn /
- noun
- A metal container for storing food
- other
- Able to; have the skill to; have the time to
- verb
- To have permission to
- To be possible to do
- To preserve food by sealing it in a metal container
apply
US / ə'plaɪ /
•UK / əˈplaɪ /
- verb
- To spread a substance or liquid over a surface
- To commit your time and effort to doing something
- To make something useful in a certain situation
- To be relevant for a situation
- To ask formally for (job, permission etc.)
but
US / bət /
•UK / bʌt,bət /
- conjunction
- Used before you say something different, opposite
zero
US / ˈzɪərəʊ /
•UK / ˈzɪroʊ /
- noun
- Temperature when water turns to ice
- number
- Number 0
- verb
- To set a scale or other device to show 0
equal
US / 'i:kwəl /
•UK / ˈikwəl /
- adjecitve
- Same in shape, size, or number
- verb
- To add up or be the same as
now
US / naʊ /
•UK / naʊ /
- adverb
- At the present time or moment
- Right away or in the next possible moment
- Used to refer to something that just happened
- Time between the present and a moment in the past
- conjunction
- Resulting from or because of something
tall
US / tɔ:l /
•UK / tɔl /
- adjecitve
- High in height
maybe
US / ˈmeɪbi /
•UK / ˈmebi /
- adverb
- Possibly but not certainly; perhaps
not
US / nɒt /
•UK / nɑt /
- adverb
- Word indicating the negative
- (Used to form the negative of verbs)
our
US / 'aʊə(r) /
•UK / aʊr /
- determiner
- Belonging to us
video
US / 'vɪdɪəʊ /
•UK / ˈvɪdiˌo /
- adjecitve
- Of a moving film, with sound
- noun
- Recording capturing action with sound
- verb
- To make a moving film of, with sound