Slope and Y-Intercept Word Problems

A plumber charges $25 for a service call plus $50 per hour of service. Write an equation in slope-intercept form for the cost, C, after h hours of service.

Write the equation that represents this word problem:

Marsha gets a job that pays $15 per hour, and she started the week with $20

• y= 15x + 20

• y= 20x + 15

• y= 15 + 20

• y= 20 + 15

• Answer Not Here

Given the problem in the box below, what is the slope and what does the slope represent?

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Given the function, what is the slope and what does it mean?

• 2.25

  The cost of the ice cream

• .75

  The cost per topping

• 2.25

  The cost per topping

• .75

  The cost of the ice cream

Given the function, what is the y-intercept and what does it mean?

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There were approximately 11,000 students enrolled at Western Carolina last year. This figure goes up by about 225 students each year. Create an equation that can be used to find y, the total number of students, if x represents the number of years?

• y=225x+11000

• y=11000x+225x

• x=225y+11000

• y=225x

Alan buys a new car for $25,000. It depreciates at a rate of $2000 per year. Create an equation that can be used to find y, the value of the car, if x represents the number of years?

• y=-2000x-25000

• y=-25000x+2000

• y=23000x

• y=-2000x+25000

Mrs Curren plans on running 20 minutes everyday. Write an equation assuming she has already ran 140 min.

• y=20x+140

• y=-20x-140

• y=20x-140

• y=-20x+140

Lee charges $3 for a basket and $2.50 for each pound of fruit picked at the orchard. Write an equation in y = mx + b form for the total cost of x pounds of fruit from the orchard.

• y = 3x + 2.5

• y = 2.50x + 3

• y = 2.50x 

• y = 3x + 2.50

You plan to go snowboarding. The resort charges $15 an hour in addition to $25 to rent a board. Write an equation that represents the cost to go snowboarding for the day.

• y=15x-25

• 15x+25y=100

• 25x+y=15

• y=15x+25