Question

The midpoint of CD is E(–1, 0). One endpoint is C(5, 2). What are the coordinates of the other endpoint?
please explain every step

Answer 1

notice the RISE and RUN of those 2 points
use the same values to got to the other endpoint

Answer 2

\[ midpoint =\frac{ (x1 + x2) }{ 2 } ;\frac{ (y1 + y2) }{2 } \]

Answer 3

is it -7,-2 I think the midpoint is ((x1 + x2)/2, (y1 + y2)/2)

thus (x1 + x2)/2 = -1 --> x1 + x2 = -2 --> substitute for x1 --> 5 + x2 = -2 --> x2 = -7

and (y1 + y2)/2 = 0 --> y1 + y2 = 0 --> 2 + y2 = 0 --> y2 = -2

the other end point is (-7, -2)

Answer 4

yeap

Answer 5

really lol I thought I did it wrong is there an easy way to do this

Answer 6

well... yes, using the Rise an Run like above would have been the easier way
but yes, using the MidPoint formula works too