Finding Slope and Y-Intercept from Word Problems

Suppose that a bike rents for $4 plus $1.50 per hour. Write an equation in slope-intercept form that models this situation.

• y = 4x + 1.50

• y = 1.50x + 4

• y = -4x +1.50

• y = 4x - 1.50

An airplane 30,000 feet above the ground begins descending at a rate of 2,000 feet per minute. Write an equation to model the situation.

• y = - 2,000x + 30,000

• y = - 2,000x - 30,000

• y = 30,000x + 2,000

• y = -30,000x + 2,000

What does "m" represent in y=mx+b?

• y-intercept

• slope

• macaroni

• nothing

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.

• C = 25 + 50h

• C = 50 + 25h

• H = 25 + 50c

• H = 50 + 25c

Write the equation

• y = 25x

• y = 100x - 25

• y = -25x + 100

• y = 25/100x

An amusement park has an entrance fee, and then there is a cost to ride each ride. The total cost (y) can be modeled by y=1.5x+20 where x is the number of rides you ride. What does the y intercept represent?

• Number of rides

• The entrance fee

• The cost for food

• The cost per ride

What does the y intercept represent?

• The amount of cases already chopped

• The amount of cases he can chop in an hour

• His starting salary

• The hours Jared works

What does the slope represent on this graph?

• starts at 0

• starting salary

• Salary per Movie

• highest salary

Identify the y-intercept in that table.

• (0, 2)

• (1, 4)

• (2, 6)

• (3, 8)

• (4, 10)

Look at the graph.

Identify the y-intercept.

• 4/5

• -4/5

• (-5, 0)

• (0, 4)