Linear Functions

You plan to go snowboarding. The resort charges $15 an hour in addition to $25 to rent a board. Write an equation that represents the cost to go snowboarding for the day.

• y=15x-25
• 15x+25y=100
• 25x+y=15
• y=15x+25

Tags

CCSS.6.EE.C.9

Lee charges $3 for a basket and $2.50 for each pound of fruit picked at the orchard. Write an equation in y = mx + b form for the total cost of x pounds of fruit from the orchard.

• y = 3x + 2.5
• y = 2.50x + 3
• y = 2.50x 
• y = 3x + 2.50

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

The local service center advertises that it charges a flat fee of $50 plus $8 per mile to tow a vehicle. Write an equation that represents the total cost (C) of a service for m miles of towing.

• y = 8x + 50

• C = 50m +8

• y = 50x + 8

• C = 8m + 50

Tags

CCSS.6.EE.C.9

Your new job is at the Custom T Shop, where T Shirts are printed to order. For each order, Custom T Shop charges $8 per shirt plus a one time set up fee of $15, represented by the equation y=8x+15

How much would 50 shirts cost?

• y= 40

• y= 400

• y= 415

• y= 65

• y= 390

Tags

CCSS.HSF.LE.B.5

The price p of an ice cream is $3.95 plus $0.85 for each topping t on the ice cream.

• p = 0.85t - 3.95

• p = 0.85t + 3.95

• p = 3.95t + 0.85

Tags

CCSS.6.EE.C.9

A football team averages 4.5 yards/play. They start a drive on their own 20 yard line. Write a function that tells how far d from their own goal line they will be as a function of plays p.

• d= 4.5p - 20

• p=4.5d + 20

• p= 4.5d - 20

• d= 4.5p + 20

Tags

CCSS.HSF-BF.A.1A

What is a function?

• Every output has one input.

• Every input has one output.

• If there is a constant rate of change.

• If it is a line.

Tags

CCSS.8.F.A.1

Find the slope:
y = 2x - 10

• 1/2
• 2
• 5
• -10

Tags

CCSS.8.EE.B.5

Is this function linear or nonlinear?

• Linear
• Nonlinear

Tags

CCSS.8.F.A.3

• 13

• - 13

• 23

Tags

CCSS.HSF.IF.A.2