Solve the top, then solve the bottom, and divide the top by the bottom.
Answer:
The graph should look almost exactly like this. I used a virtual graphing chart to assist, since it is capable of showing more than paper alone.
Answer: 75 feet
3 Feet = 1 Yard
solve for y by subtracting 3x from each side
-4y = -3x+8
divide by -4
y = 3/4 x -2
[ 11 - 10 ] / 10 x 100%
= 1 /10 x 100%
= 10%
Only 10% longer