Asked by kate

11. The midpoint of is E(–1, 0). One endpoint is C(5, 2). What are the coordinates of the other endpoint?

can someone please explain how to do this problem

Answers

Answered by Steve
For the x-coordinate,
C is 6 units to the right of E

For the y-coordinate,
C is 2 units above E

So, since E is the midpoint, the other endpoint is
6 to the left and 2 below E, or (-7,-2)

Algebraically, you know that if the ends are C and D,

(Cx+Dx)/2 = Ex
(Cy+Dy)/2 = Ey, so

(5+Dx)/2 = -1
(2+Dy)/2 = 0

5+Dx = -2
Dx = -7

2+Dy = 0
Dy = -2

as shown above
Answered by kate
thank you
Answered by mia
did you use the midpoint formula

Related Questions