Use the equation a^2 + b^2 = c^2.
225 + 1296 = c^2
1596 = c^2
Square root both
39 = c
7y+5-8y+6
Group like terms
7y-8y+5+6
-y+11
or 11-y
Answer:
(2, 2) states x=2 and y=2
Considering the inequality:

Is y less than or equal to 2 when x = 2?

Yes, (2, 2) is a solution for the inequality.