Parts of a Function

What is the name given to the point (4 , -9)?

• just a plain point

• root

• y-intercept

• vertex

What is the name given to the point (1 , 0)?

• just a plain point

• root

• y-intercept

• vertex

Find the zero(s) of the function.

• x = 10

• x = -10

• x = -8/5

• x = 8/5

What is the x-intercept of the function?

• It doesn't have an x-intercept

• x = 1

• x = 4

• x = 0

The picture ​ (a)   a function because every ​x ​ (b)   point to exactly one y.

• shows

• does not show

• does

• does not

A function is a type of rule in which each ​ (a)   results in exactly one ​ (b)   .​

• input

• output

• linear

• nonlinear

• straight line

What is the inverse of this function?

• A

• B

• C

• D

Which is f ^-1(x)?

• f ^-1(x) = 5x + 3

• f ^-1(x) = 5x - 3

• f ^-1(x) = 5x - 15

• f ^-1(x) = 1/5(x) + 3/5

Was the inverse function found correctly?

• no

• yes

A zero of a function is essentially where the graph of the function intersects the x-axis. (True or False)

• True

• False