Sounds like you're finding the perimeter of the block which means you'll need to use yards
Y intercept is -3 because the linear equations is y = m(x) + b. m = slope and b = y intercept
I didn't state this earlier, but you should find the common denominator so in this case it is 10.
1/2=5/10, 9/10 stays the same, and 4/5=8/10.
Now you add them up.
5/10 + 9/10 + 8/10 = 22/10
22/10 = 2 2/10
2 2/10 = 2 1/5
Answer: A. 2 1/5