Answer:
5
Explanation:
x1 = -3
x2 = 1
y1 = 1
y2 = 4
1- (-3) = 4
4 - 1 = 3
a^2 + b^2 = c^2
3^2 + 4^2 = c^2
c^2 = 25 c= 5
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