Question

A car with 12 gallons of gasoline drives 321 miles until the tank is empty.

write a linear equation that describes the amount of gas left in the car,y,after driving x miles

(type the answer in slope intercept form)
use integers or simplified fractions for any number I the expression

Answer 1

`(12 * x)/(321)`

Answer 2

`y = - (4x)/(107) + 12`

Explanation:

You start with 12 gallons, and for every mile that you drive, you will deplete
`(1)/(321)` of your total amount of gas, or
`(12)/(321) = (4)/(107)` gallons of gas for every mile you drive. Thus, for every x miles you drive, you'll deplete
`(4x)/(107)` miles. Subtract that from 12 to get your final answer.