Reveal Math Practice 5-3

A cleaning service charges an Initial fee plus an hourly rate.

The total cost for different numbers of hours, Including the

initial fee, is shown on the graph.

What is the Rate of Change (slope)?

• $10 per hour

• $4 per hour?

• $8 per hour

• $6 per hour?

A cleaning service charges an Initial fee plus an hourly rate.

The total cost for different numbers of hours, Including the

initial fee, is shown on the graph.

What is the Inital Value? (y-intercept)?

• $20

• $28

• $36

• $36

A cleaning service charges an Initial fee plus an hourly rate.

The total cost for different numbers of hours, Including the

initial fee, is shown on the graph.

What equation decribes the function in y=mx+b form?

The table shows the distance Penelope is from the

park as she walks to soccer practice. Assume the

relationship between the two quantities is linear.

What is the rate of change (slope)?

• -1930m per minute

• -1380m per minute

• -550m per minute

• -110m per minute

The table shows the distance Penelope is from the

park as she walks to soccer practice. Assume the

relationship between the two quantities is linear.

What is the intial value (b)?

• 2480m

• 1930m

• 830m

• 280m

A roller skating rink charges a skate rental fee and an hourly rate to skate. The total cost to skate for 2 hours is $9.50 and for 5 hours is $18.50. Assume the relationship is linear. Find and interpret the rate of change and initial value.

What is the equation of the function in the form y = mx + b, where x represents the number of hours and y represents the total cost?

A movie theater offers a reward program that charges a yearly membership fee and a discounted rate per movie ticket. The total cost for a reward program member to see 5 movies is $40 and the total cost for 12 movies is $75. Assume the relationship is linear.

Write the equation of the function in the form y = mx + b, where x represents the number of movies and y represents the total cost.