Slope from Equations and Context

A mechanic charges a flat fee of $15 and then charges $65 per hour. Write a formula for the total cost of hiring the mechanic.

• y = 15x + 65
• y = 65x + 15

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Bob's Plumbing charges $25 per hour plus a service fee of $40 for coming out to your house. Which equation models this situation?

• y = 25x + 40

• y = 40x + 25

• y = 25x

• y = 25x - 40

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Eddie's Electric charges $90 per hour plus a $50 traveling fee. Which equation models this scenario?

• y = -50x + 90

• y = 90x + 50

• y = -90 - 50x

• y = 50 - 90x

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Amelia has $100 in her savings account and plans on saving $20 per week. Write an equation to represent this situation.

• y = 100x

• y = 20x

• y = 20x + 100

• y = 100x + 20

Tags

CCSS.HSF-BF.A.1A

A plant is 5cm tall and growing at a rate of 3cm a month.

• y = 5 - 3x

• y = 5x + 3

• y = 3x +5

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

My water bottle started with 32 ounces of water in it and I drank 8 ounces per hour. Write a formula for the amount of water remaining.

• y = 8x + 32
• y = -8x + 32
• y = 8x - 32
• y = 32x + 8

Tags

CCSS.6.EE.C.9

A candle is originally 12 inches tall and burns a constant rate of 2 inches per hour. Write a formula for the height of the candle remaining.

• y = 2x + 12
• y = -2x + 12
• y = 12x - 2
• y = 12x + 2

Tags

CCSS.HSF-BF.A.1A

Fright Fest at Elitch’s costs $20 to get in and then $5 per haunted house you go in. Write a formula for the total cost of Fright Fest.

• y = 5x + 20
• y = 20x + 5

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

What is the rate of change in the equation?
y=8x+6

• 8
• 6

Tags

CCSS.HSF-LE.A.1B

Identify the rate of change from the following equation:

y = 2x + 4

• 1

• 2

• 3

• 4

Tags

CCSS.8.F.B.4

CCSS.HSF.IF.B.6