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.
(a) 110
(b) 1,100
(c) 9,900
(d) 10,000
(e) 12,100
Please explain in details.
(a) 110
(b) 1,100
(c) 9,900
(d) 10,000
(e) 12,100
Please explain in details.
