Question

Rachel is driving to Denver. Let y represent her distance from Denver (in miles). Let x represent the time she has been driving (in hours). Suppose that x and yare related by the equation y = 475 - 60x.Answer the questions below.Note that a change can be an increase or a decrease.For an increase, use a positive number. For a decrease, use a negative number.-Picture includes the questions-

Answer 1

Given the equation:

`y=475-60x`

Let y = distance

Let x = time

- The distance from Denver when she began is given by x = 0, therefore:

`y=475-60(0)=475-0=475`

Answer 1. 475 miles

- The change for each four hours, this is x = 4, so:

`y=475-60(4)=475-240=235`

Answer 2. 235 miles