Ryan is tracking how much money he has each week.

Question

He started with $50
He saves $15 per week for the first 6 weeks
He spent $10 per week after week 6 until the money's all spent

The graph of this scenario would be___________ because the rate of change changes.
The y-intercept of this graph would be__________ meaning____________
The rate of change is_________ after the first 6 weeks because as the weeks increase the money decreases.

Answer 1

The graph of this scenario would be piecewise linear because the rate of change changes after the first 6 weeks.

The y-intercept of this graph would be $50, meaning that this is the starting amount of money Ryan has.

The rate of change is -10 dollars per week after the first 6 weeks because, as the weeks increase, the money decreases due to the spending of $10 per week.