alimad wrote:

248. Right triangle PQR is to be constructed in the xy-plane so that the right angle is at P and PR is parallel to the x-axis. The x and y coordinates of P, Q and R are to be integers that satisfy the inequalities -4 <= x <= 5 and

6 <=y <= 16. How many different triangles with these properties could be constructed?

Need your assistance. Please help!!

Possible values of x =10

possible values of y = 11

total points = 110

you need three distinct points to create a triangle

so 110C3 = 110x109x36 - (10x10C3 + 11x11C3)