Slope and Intercept: Real-World Applications for Grade 8

A car rental company charges a flat fee of $20 plus $0.15 per mile driven. Write the equation in slope-intercept form and identify the slope.

• C = 0.15m + 20; slope = 0.15

• C = 0.20m + 20; slope = 0.20

• C = 0.15m + 10; slope = 10

• C = 20m + 0.15; slope = 20

A local gym has a membership fee of $50 and charges $10 per class attended. Convert the standard form equation y - 50 = 10(x - 0) to slope-intercept form and identify the slope.

• The slope is 5.

• The slope is 10.

• The slope is 0.

• The slope is 15.

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

A delivery service charges a base fee of $5 and $2 for each item delivered. What is the slope of the equation that represents the total cost in slope-intercept form?

• 5

• 2

• 0

• 3

Tags

CCSS.8.EE.B.5

A taxi company charges a starting fare of $3 and $2.50 per mile. If the equation is given as y = 2.5x + 3, what is the slope?

• 3

• 2

• 5

• $2.50

• 2.5

Tags

CCSS.8.EE.B.5

A school is planning a fundraiser where they sell cookies for $1 each. If they start with a goal of $100, write the equation in slope-intercept form and identify the slope.

• y = 2x + 0; slope = 2

• y = 0.5x + 100; slope = 0.5

• y = 1x + 100; slope = 1

• y = 1x + 0; slope = 1

A phone plan costs $30 per month plus $0.10 per text message. Convert the equation y - 30 = 0.1x to slope-intercept form and identify the slope.

• The slope is 0.05.

• The slope is 0.1.

• The slope is 1.0.

• The slope is 0.3.

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

A farmer sells apples for $2 each and has a fixed cost of $50 for supplies. Write the equation in slope-intercept form and identify the slope.

• y = x - 50; slope = 1

• y = 2x + 50; slope = 2

• y = 2x - 50; slope = 2

• y = 3x - 50; slope = 3

A concert venue charges $25 for a ticket and $5 for parking. If the total cost is represented by the equation y = 5x + 25, what is the slope?

• 25

• 0

• 10

• 5

A subscription service charges $15 per month and has a one-time setup fee of $10. Convert the equation y - 10 = 15x to slope-intercept form and identify the slope.

• The slope is 5.

• The slope is 10.

• The slope is 20.

• The slope is 15.

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

A local bakery sells cupcakes for $3 each and has a daily operating cost of $50. Write the equation in slope-intercept form and identify the slope.

• y = 3x - 50; slope = 3

• y = 3x + 50; slope = 3

• y = 3x - 3; slope = 0

• y = 50 - 3x; slope = -3