Mastering Slope-Intercept: Real-Life Cost Challenges

A car rental company charges a flat fee of $50 plus $0.20 per mile driven. Write the equation in slope-intercept form and identify the slope and y-intercept.

• Slope: 0.20, Y-intercept: 50

• Slope: 0.20, Y-intercept: 100

• Slope: 0.10, Y-intercept: 50

• Slope: 0.50, Y-intercept: 20

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

A gardener is planting flowers in a straight line. If he plants 5 flowers every hour, starting with 2 flowers already planted, what is the slope and y-intercept of the equation that represents the number of flowers planted over time?

• Slope: 2, Y-intercept: 5

• Slope: 0, Y-intercept: 2

• Slope: 5, Y-intercept: 2

• Slope: 5, Y-intercept: 0

A phone plan costs $30 per month plus $0.10 per text message. What is the slope and y-intercept of the cost equation in slope-intercept form?

• Slope: 0.10, Y-intercept: 20

• Slope: 0.05, Y-intercept: 25

• Slope: 0.20, Y-intercept: 30

• Slope: 0.10, Y-intercept: 30

A school is selling tickets for a play. The tickets cost $10 each, and they have already sold 50 tickets. What is the slope and y-intercept of the equation that represents total sales?

• Slope: 10, Y-intercept: 50

• Slope: 0, Y-intercept: 10

• Slope: 10, Y-intercept: 0

• Slope: 5, Y-intercept: 50

A fitness center charges a monthly fee of $25 plus $5 for each class attended. Write the equation in slope-intercept form and identify the slope and y-intercept.

• y = 5x + 20; slope = 5, y-intercept = 20

• y = 5x + 25; slope = 5, y-intercept = 25

• y = 10x + 25; slope = 10, y-intercept = 25

• y = 5x + 30; slope = 5, y-intercept = 30

A taxi company charges a flat rate of $3 plus $2 per mile. What is the slope and y-intercept of the cost equation in slope-intercept form?

• Slope: 2, Y-intercept: 0

• Slope: 1, Y-intercept: 5

• Slope: 2, Y-intercept: 3

• Slope: 3, Y-intercept: 2

A local bakery sells cupcakes for $3 each and has a starting cost of $10 for ingredients. Write the equation in slope-intercept form and find the slope and y-intercept.

• y = 4x + 10; slope = 4; y-intercept = 10

• y = 2x + 10; slope = 2; y-intercept = 10

• y = 3x + 5; slope = 3; y-intercept = 5

• y = 3x + 10; slope = 3; y-intercept = 10

A subscription service charges $15 per month plus $1 for each additional movie rented. What is the slope and y-intercept of the total cost equation?

• Slope: 0, Y-intercept: 15

• Slope: 1, Y-intercept: 15

• Slope: 1, Y-intercept: 20

• Slope: 2, Y-intercept: 10

Tags

CCSS.8.EE.B.5

A bookstore sells novels for $12 each and has a fixed cost of $100 for rent. Write the equation in slope-intercept form and identify the slope and y-intercept.

• y = 12x - 100; slope = 12, y-intercept = -100

• y = 12x - 50; slope = 12, y-intercept = -50

• y = 12x + 100; slope = 12, y-intercept = 100

• y = 10x - 100; slope = 10, y-intercept = -100