Figuring Out Function Rules

Find the function rule for the function table.

• 2/n

• n + 2

• 2n

• n - 2

Write the function rule for the following table.

•  5x

• 5x + 1

•  x + 5

•  x + 1

Find the function rule.

• y = 2x

• y = 2x+3

• y = 3x+3

• y = -2x+3

Find the function rule.

• y = -2x +10

• y = -2x -10

• y = 2x +10

• y = 2x-10

Identify the function rule that best represents the following statement:
A bottle rocket is being launched from the roof of an 80 meter tall building. If the rocket travels straight up at a rate of 22 m/s, what is the total height of the rocket as a function of time?

• H = 108x

• H = 80 - 22x

• H = 80 + 22x

• H = 80x + 22

Patrick earns $20 for every lawn that he mows. Write an equation used to find t, the total amount of money he earns from mowing n lawns.

• n = 20t

• t = 20n

• t = n + 20

• t = n - 20

The output is four times the input.

• y = x/4

• 4x

• y = 4x

• y = x +4

The number of multiple-choice questions on a test is ten times the number of open-ended questions.  Write a function that describes the relationship.

• y = 10x

• x = 10y

• y = 10 + x

• x = 10 + y

Which graph does NOT pass the vertical line test?

• Graph 1

• Graph 2

• Graph 3

• Graph 4

A pizzeria charges $12 per pizza plus an additional $3 for delivery. Which equation represents the cost of having any number of pizzas delivered?

• c = 12p + 3

• c = 12p

• c = 3p

• c = 12 + 3p