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.EE.B.6

CCSS.8.F.A.1

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.A.1

CCSS.8.F.A.3

CCSS.8.F.B.4

Find the function rule.

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

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.1

CCSS.8.F.B.4

CCSS.8.SP.A.2

The school cafeteria has 285 cartons of milk in stock. Each day, a total of 60 cartons are sold. Which function rule best represents this situation?

• y = 285x + 60 
• y = 285x - 60
• y = 285 - 60x
• y = 285 + 60x

Tags

CCSS.8.F.A.1

CCSS.8.F.A.3

CCSS.8.F.B.4

A water tank holds 84 gallons. When it began to leak it lost 3 gallons every hour. Write an equation to find the amount of water "y" the tank will have after "x" number of hours.

• y = 84 - 3x
• y = 3 - 84x

Tags

CCSS.8.EE.C.7

CCSS.8.F.A.1

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.SP.A.3

Write the function rule for the following table.

•  5x
• 5x + 1
•  x + 5
•  x + 1

Tags

CCSS.8.F.A.1

CCSS.8.F.B.4

Give the function rule.

• 10n

• 14

• n+9

Tags

CCSS.8.F.A.1

CCSS.8.F.B.4

Give the function rule.

• 25

• n+4

• 5n

Tags

CCSS.8.F.A.1

CCSS.8.F.B.4

Give the function rule.

• x-4

• 4

• 4x

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.1

CCSS.8.F.A.3

CCSS.8.F.B.4

Give the function rule.

• 55

• x+11

• 11x

Tags

CCSS.8.F.A.1

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.SP.A.3