Writing Function Rules

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

Tags

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.SP.A.3

Find the function rule.

• y = 2x

• y = 2x+3

• y = 3x+3

• y = -2x+3

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Find the function rule.

• y = -2x +10
• y = -2x -10
• y = 2x +10
• y = 2x-10

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

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

• (A) y = 40 + 25x
  (B) $140
• (A) y = 40x + 25
  (B) $185
• (A) y = 40 + 25x 
  (B) $185
• (A) y = 40x + 25 
  (B) $140

Tags

CCSS.8.F.A.1

CCSS.8.F.A.3

CCSS.8.F.B.4

Write the function rule for the following table.

•  5x
• 5x + 1
•  x + 5
•  x + 1

Tags

CCSS.HSF.LE.A.2

CCSS.8.F.B.4

What is the initial value?

• -3
• 0
• 3
• 20

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

What is the initial value in this table?

• -2
• 2
• 6
• 14

Tags

CCSS.8.F.B.4

Which equation matches the table?

• y = x + 5
• y = 5x
• y = x - 5
• x = y - 5

Tags

CCSS.6.EE.C.9

Which equation matches the table?

• y = x 
• y = 5x
• y = x - 4
• y = x + 4

Tags

CCSS.6.EE.C.9

Write the equation for the table given

• y = 1/3x
• y = 3x
• y = -1/3x
• y = -3x

Tags

CCSS.6.EE.C.9