Rate of Change and Word Problems

Which has the greater rate of change?

• A

• B

Which has the greater rate of change?

• A

• B

Which has the greater rate of change?

• A

• B

Find the rate of change.

• -2 minutes per gallon

• -20 minutes per gallon

• -2 gallons per minute

• -20 gallons per minute

Mr. Z is starting his own car club, there is a $30 join up fee and a $5 monthly fee. What is the rate of change?

• 30

• 5

Who has the greater rate of change?

• Smith has the greater rate of change.

• Harmon has the greater rate of change.

• Macey has the greater rate of change.

• They have the same rate of change

Suppose that the water level of a river is 34 feet and that it is receding at a rate of 0.5 foot per day.

The initial value (b) is _____.

Suppose that the water level of a river is 34 feet and that it is receding at a rate of 0.5 foot per day.

The slope (m) is ____.

A bus company took a tour bus on the ferry when there were 30 people aboard. The ferry charged the bus company $180.

The following week, the bus had 50 people on board and the ferry charged them $220.

What is the equation (y=mx+b) that represents this situation?

A plumber charges $25 for a service call plus $50 per hour of service.

Write an equation to represent the situation. Use x and y as your variables.