Linear Equations

Speedy Boat Rental charges a $15 deposit fee plus $2 for each hour of use to rent a paddle boat. Write an equation for y, the total cost, to rent the boat for x hours.

• x = 2y + 15

• y = 15x + 2

• x = 15y + 2

• y = 2x + 15

Tags

CCSS.8.F.A.1

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.SP.A.3

The Roaming Cell Phone Company charges $15.00 per month plus $0.20 per minute of airtime usage. If Juanita uses x minutes of airtime, what is an equation that can be used to determine her monthly cell phone bill (y)?

• y = 15 + 0.20x

• y =15 (0.20x)

• y = 15 + x + 0.20

• y = 0.20 + 15x

Tags

CCSS.8.EE.C.7

CCSS.8.F.A.1

CCSS.8.F.A.3

CCSS.8.F.B.4

Which of the following situations could be descried by the equation y= -25x + 120

• There are 120 people in the football stadium, and 25 more are entering each hour.
• A plumber charges $25 for a house call and $120 per hour.
• A teacher has 120 students. Her third period has 25 students
• There are 120 gallons of water in a tank. It releases water at a rate of 25 gallons per minute

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.SP.A.3

Robin has $500 in her bank account. Each month she pays $70 for her phone bill. Write an equation to represent this situation.

• y = 500x + 70

• y = 500 - 70

• y = -70x + 500

• y = 500 + 70x

Tags

CCSS.8.F.A.1

CCSS.8.F.A.3

CCSS.8.F.B.4

Bob started with $150 in his savings account then began saving $40 per month. What is the rate of change(slope) of this situation?

• $150

• $40

• 150/40

• 40/150

Tags

CCSS.8.EE.B.5

CCSS.8.F.B.4

CCSS.8.SP.A.3

Bob started with $150 in his savings account then began saving $40 per month. What equation describes this situation?

• y=40x+150

• y=150x+40

• x=150y+40

• x=40y+150

Tags

CCSS.8.F.A.1

CCSS.8.F.A.3

CCSS.8.F.B.4

In order to join an online course, there is a $20 startup fee and a $5 monthly fee. What equation best describes this situation?

• y=20x+5

• y=5x+20

• x=5y+20

• x=20y+5

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.2

CCSS.8.SP.A.3

Which equation represents the following graph?

• y = 3x + 2
• y = -2x + 3
• y = 2x + 3
• y = -3x + 2

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.A.2

CCSS.8.F.A.3

CCSS.8.F.B.4

Give the equation for the graph

• y = 5x - 3
• y = 4x + 2
• y =-2x + 5
• y = - 2x + 4

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.A.2

CCSS.8.F.A.3

CCSS.8.F.B.4

Graph. y = -4

• a
• b
• c
• d

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.1

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.F.B.5