Question

The midpoint of KL is M(9, 7). One endpoint is K(9, 10). Find the coordinates of the otherendpoint L.

Answer 1

The coordinates are L(9,4)

Explanation:

The midpoint is the mean between both endpoints.

In this question:

Endpoints (9,10) and (x,y)

Midpoint (9,7).

Finding x:

9 = (9+x)/2

9 + x = 18

x = 18 - 9

x = 9

Finding y:

7=(10+y)/2

10 + y = 14

y = 14 - 10

y = 4

The coordinates are L(9,4)