Slope and Y-intercept Word Problems

1. Suppose that the water level of a river is 34 feet and that it is receding at a rate of 0.5 foot per day. Write an equation for the water level, L, after d days.

• L = 34d + 0.5

• L = 0.5d + 34

• d = 0.5L + 34

• d = 34L + 0.5

Tags

CCSS.HSF-BF.A.1A

1. A canoe rental service charges a $20 transportation fee and $30 dollars an hour to rent a canoe. Write and graph an equation representing the cost, y, of renting a canoe for x hours.

• x = 30 + 20

• y = 20 + 30

• x = 20y + 30

• y = 30x + 20

Tags

CCSS.8.EE.B.5

For babysitting, Nicole charges a flat fee of $3, plus $5 per hour. Graph a linear equation (y=mx+b) to model this situation.

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Tags

CCSS.8.EE.B.5

Find the equation that matches the table.

• y = 3x

• y = 3x + 1

• y = x + 3

• y = x - 3

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Find the equation that matches the table.

• y = 10x + 65

• y = 5x + 65

• y = -5x + 65

• y = -10x + 65

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Write an equation for the line shown in the graph.

• y = 1/2x - 1/2

• y = 2x + 1

• y = -2x - 2

• y = -1/2x - 1/2

Which equation best represents the relationship between the x-values and the y-values in the table?

• y = x + 13

• y = 3x + 13

• y = 3x + 10

• y = 10x + 3

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

A plumber charges $25 for a service call plus $50 per hour of service. Which table shows the relationship between the cost, C, after h hours of service?

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Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1