A salesman starts a trip with 15 gallons of gasoline in his tank. After traveling 220 miles he has 10 gallons of gasoline in his tank. Model this relationship with a linear equation relating the number of miles you can travel to the remaining gallons of gasoline. Explain what the x-intercept, the y-intercept, and the slope represent in this situation.

Answer 1

5 gallons = 220 miles

Let x = additional miles traveled

220/5 = x/10

I'll leave the explanations up to you.