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The function V of r is equal to 4 thirds pi r cubed can be used to find the volume of air inside a basketball given its radius. What does V of r represent?

A
the radius of the basketball when the volume is V
B
the volume of the basketball when the radius is r
C
the volume of the basketball when the radius is V
D
the radius of the basketball when the volume is r
2
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Consider the function represented by the equation y minus 6x minus 9 is equal to 0 Which answer shows the equation written in function notation with x as the independent variable?

A
f of x is equal to 1 sixth x plus 3 halves
B
f of y is equal to 6 y plus 9
C
f of x is equal to 6 x plus 9
D
f of y is equal to 1 sixth y plus 3 halves
3

If the point 4 comma 5 is on the graph of a function, which equation must be true?

A
f of 4 is equal to 5
B
f of 5 comma 4 is equal to 1
C
f of 5 comma 4 is equal to 9
D
f of 5 is equal to 4
4

The height of a rocket, in feet, t seconds after it is released, is modeled by h of t is equal to negative 16t squared plus 32t plus 10 What does t represent?

A
the initial height of the rocket
B
the initial velocity of the rocket
C
the number of seconds after the rocket is released
D
the height of the rocket after t seconds
5

Consider the function represented by 9x plus 3y is equal to 12 with x as the independent variable. How can this function be written using function notation?

A
f of x is equal to negative 1 third x plus 4 thirds
B
f of y is equal to negative 3 y plus 4
C
f of y is equal to negative 1 third y plus 4 thirds
D
f of x is equal to negative 3x plus 4
6

The point negative 3 comma negative 5 is on the graph of a function. Which equation must be true regarding the function?

A
f of negative 3 is equal to negative 5
B
f of negative 5 is equal to negative 3
C
f of negative 3 comma negative 5 is equal to negative 8
D
f of negative 5 comma negative 3 is equal to negative 2
7

Consider the function represented by the equation 6q is equal to 3s minus 9 Write the equation in function notation, where q is the independent variable.

A
f of q is equal to 2 s plus 3
B
f of q is equal to 2 q plus 3
C
f of s is equal to 1 half s minus 3 halves
D
f of q is equal to 1 half q minus 3 halves
10

Which is true regarding the graphed function f of x ?

A
f of 5 is equal to negative 1
B
f of 0 is equal to 3
C
f of 2 is equal to negative 2
D
f of 3 is equal to 2

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Pretest Answers — CMS 2026-2027 NC Math 1 CREDIT…