The midpoint between −100 and point A is −119. Find the coordinate of point A.

Question

asked Feb 13, 2021 209k views

2 Answers

Praxis Ashelin · Answer 1 · 2021-02-16T19:16:26+0000

Answer:

The coordinate of point A is -138

Explanation:

we know that

The formula to calculate the midpoint between two points is equal to

M((x_1+x_2)/(2))

In this problem

$x_1=-100\\M=-119$

substitute

-119=(-100+x_2)/(2)

solve for x_2

-119(2)=-100+x_2

$x_2=-238+100\\x_2=-138$

therefore

The coordinate of point A is -138