The Vocab
Are You Having Fun(ction)?
Don't be Slopey
Why Intercept?
Linear or Nonlinear?
Domain and Range
100
This word is used to describe the set of all inputs for a function.
Domain
100
Is the following relation a function?
(1, 0), (2, 2), (3, 4)?
Yes
100
y=__x+b
m
100
y = mx + __
b
100
y = 5x + 2
Linear
100
Find the DOMAIN:
{(-2, 4), (3, 2), (2, 10)}
{-2, 3, 2)
200
This word is used to describe the set of all outputs of a function.
Range
200
Is the following relation a function? Justify your answer.
(1, 1), (4, 1), (5, 2), (1, 2), (2, 5)?
No, the value of 1 repeats.
200
____ over ____
rise over run
200
If the y-intercept is the origin, x will = ___.
0
200
y = 1/2 x - 7
Linear
200
Find the RANGE:
{(-2, 4), (3, 2), (2, 10)}
{4, 2, 10}
300
This word describes a relation that pairs each x value with only one y value.
Function
300
Does the following table represent a function? Justify your answer.
x y
1 2
2 5
6 2
2 9
5 1
No, the value of 2 repeats.
300
A _____ line has an undefined slope.
vertical line
300
The y-intercept is the point where a line _____ the y-axis.
crosses or intersects
300
y = 4/3x2
Justify your response.
Nonlinear - x can not be in the denominator or have an exponent other than 0 or 1.
300
Find the DOMAIN:
x y
-1 -4
0 1
2 5
4 6
{-1, 0, 2, 4}
400
This word describes a relationship between two sets of numbers.
What is a relation?
400
Is this a function and why?
No, because the x's repeat at 8 OR it does not pass the vertical line test
400
A _____ line has a slope equal to 0.
horizontal line
400
What's my y-intercept?
-3
400
y = x
Justify your answer.
Linear - It follows y = mx + b
400
Find the RANGE:
{-2, 2, 3, 1}
500
This term identifies the variable that changes based upon the other variable in a function.
What is the dependent variable?
500
Is this a function and why?
Yes, because the x's are all different OR it would pass the vertical line test.
500
The slope tells me how much ____ changes as ___ changes.
Y changes as X changes
500
What's my y-intercept?
4
500
2x + 3y = 7
Linear - It is in standard form.
500
Find the DOMAIN:
{-2, 2, 3}