Is it a Function?
Intercept
Types of Functions
Domain and Range
100
Is the following relation a function?
(1, 0), (2, 2), (3, 4)?
Yes
100
y = mx + __
What is the missing letter for the y-intercept??
b
100
What kind of function is this?
y = 5x + 2
Linear
100
Find the DOMAIN:
{(-2, 4), (3, 2), (2, 10)}
{-2, 2, 3)
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
The y-intercept is the point where a line _____ the y-axis.
crosses or intersects
200
y = 4x2 -5
What kind of function is this?
Quadratic
200
Find the RANGE:
{(-2, 4), (3, 2), (2, 10)}
{2, 4, 10}
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
What's my y-intercept?
-3
300
y = | x + 2 |
What kind of function is this?
Absolute Value
300
Find the DOMAIN AND RANGE:
x y
-1 5
0 1
2 -4
4 6
DOMAIN {-1, 0, 2, 4}
RANGE {-4, 1, 5, 6}
400
Explain how the vertical line test works.
If the vertical line crosses the graph at only 1 point, it is a function.
400
The y-intercept is also know as the ...
___________ point
Starting point
400
What kind of function is this?
sqrtx-4
Square root
400
Explain what domain and range represent.
Domain is all of the x-values and range is all of the y-values