Answer: x = 4, y = 3
<u>Step-by-step explanation:</u>
and 
Using substitution method we get:

None you do not even have 35 feet which would make just one pin
The closest point above on this line is (0,9)
You can find this by using the rise over run method. Since the slope is -2, we can move to the next whole number point by observing the fraction 2/-1.
Rise = 2
Run = -1
If you start on the point (1,7) and rise two, it will bring you to (1,9), then you have to move back one space (or run) to (0,9).