Question

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

Answer 1

-138

Explanation:

Answer 2

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