Question

M(4, 2) is the midpoint of RS. The coordinates of S are (6, 1). What are the coordinates of R?

Answer 1

(2, 3)

Explanation:

There is an easy way to solve this.

Set it up like this, where one end point is on top of the midpoint.

To get from 6 to 4, you subtract 2. So subtract 2 from 4 (that's where the x coordinate comes from). To get from 1 to 2, you add 1. So add 1 to 2 (that's where the y coordinate comes from)

If this sounds confusing, please comment and I'll help ASAP.