You need to sell coupon books for a fundraiser. You start with 10 books and you sell at a rate of 2 per day. Write an equation in slope intercept form and then graph it on the graph above.

Use pythagorean’s theorem and find the missing side lengths of the two smaller triangles and add them together
13^2 - 12^2 = 5
15^2 - 12^2 = 9
5+9 = 14
14 is the length of each side of the square
14^2 + 14^2 = 19.8
19.8 is the diagonal length of the inside if the square