Unit 3 - Lesson 9 - Grade 8: Illustrative Mathematics

Which line doesn’t belong?

• s
• v
• t
• u

How much money, in dollars, is available on his card after he takes 0 rides?

How much money, in dollars, is available on his card after he takes 1 ride?

How much money, in dollars, is available on his card after he takes 2 rides?

How much money, in dollars, is available on his card after he takes x rides?

How many rides can Noah take before the card runs out of money? Where do you see this number of rides on your graph?

Describe what happened with the amount on Han’s fare card in July.

Write an equation that represents the amount on the card in July, y, after x days.

What value makes sense for the slope of the line that represents the amounts on Han’s fare card in July?

What is the slope of the line?