The answer would be 100 feet.
Using a grid, I found the answer. The problem said that each unit is 5 feet, right? This would mean that each square would be 5 feet. Counting by 5's means that you'll find the answer by each square. Just count the distance and multiply by 5. You'll get it, trust me.
What do you mean by this?
-4x -6 = -5y + 2
5y = 4x + 6 + 2
5y = 4x + 8
Y = g(x) = 4/5x + 8/5
