Question

One diagonal of a rhombus has endpoints (-6, 9) and (-2, 1).

What are the endpoints of the other diagonal?

(2, 8) and (-10, 2)
(-10, 17) and (2, 7)
(-6, 5) and (-2, 4)
(2, 4) and (6, 6)

Answer 1

slope of given diagonal
\[m=\frac{ 1-9 }{-2+6 }=\frac{ -8 }{4 }=-2\]
slope of other diagonal =-1/m=1/2
check the slope given by the points by the formula one by one
\[slope=\frac{ y2-y1 }{x2-x1 } and get the result.\]

Answer 2

so whats the answer