1) Find total number of integers for x and y that fit in range.
x: (5-(-4)) + 1 = 10
y: (16-6) + 1 = 11
2) Draw a right triangle with right angle at P. It helps to visualize so I made P(0,0) Q(3,0) and R(0,4)
3) Start with P. P can be anything from x and y range, so possibilities are (10 x values)(11 y values) = 110 possibilities.
4) Next is R. Keep in mind: R's x-values can differ, but y cannot because PR is parallel to x-axis. R can only have 9 x-values because you used one x-value for P.
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x: (5-(-4)) + 1 = 10
y: (16-6) + 1 = 11
2) Draw a right triangle with right angle at P. It helps to visualize so I made P(0,0) Q(3,0) and R(0,4)
3) Start with P. P can be anything from x and y range, so possibilities are (10 x values)(11 y values) = 110 possibilities.
4) Next is R. Keep in mind: R's x-values can differ, but y cannot because PR is parallel to x-axis. R can only have 9 x-values because you used one x-value for P.
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