Question

Find all the values of k so that (-3,4),(-8,5) , and (-5,k) are the vertices of a right triangle.
A. K= -6, 1, 9, 20
B. K= -5, 2, 7, 19
C. K= -6, 2, 7, 20
D. K= -5. 1, 9, 19

Answer 1

first one is correct