New Here! Need help with a line equation problem

[elmsrock]

Nice to be here, I'm just a little frustrated with my homework at this time. Here is the problem:

Write an equation for the value of a car related to time if you bought the car two years ago when it was 3 years old for $12,500 and this year it is valued at $7,500. I am really confused about this. What are the points? Are they clearly defined as two points or what? Please someone help. Thank you in advance!

 

[mmm4444bot]

The coordinates for two points on the line are not given directly; you need to think about how you would graph the relationship of value versus age.

Let x = the age of the car (in years)

Let y = the value of the car (in dollars)

When the car was brand new, it's age was zero.

You've been given two dollar amounts.

What is x when y is 7500?

What is x when y is 12500?

Determine the answers to these two questions, and you will have the coordinates of two points on the line.