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

The output is four times the input.

• y = x/4

• 4x

• y = 4x

• y = x +4

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

Which graph does NOT pass the vertical line test?

• Graph 1

• Graph 2

• Graph 3

• Graph 4

A plumber charges a service fee of $40 plus $25 per hour for labor.
Write a function rule for the total cost of hiring the plumber for a job that takes x hours.
How much would it cost to hire the plumber for a job that takes 4 hours?

• y = 40 + 25x
  $140

• y = 40x + 25
  $185

• y = 40 + 25x 
  $185

• y = 40x + 25 
  $140

Which equation matches the table?

• y = x + 5

• y = 5x

• y = x - 5

• x = y - 5

Which equation matches the table?

• y = x 

• y = 5x

• y = x - 4

• y = x + 4