Question

Find its x-coordinate.

Answer 1

2.5

Explanation:

The formula to find the midpoint of a line segment:
`((1)/(2)x_(1) + (1)/(2)x_(2), (1)/(2)y_(1) + (1)/(2)y_(2))`

Where:

`x_(1) = -5\\x_(2) = 10\\y_(1) = 9\\y_(2) = 8`

1) Substitute the values into the midpoint formula.

`((1)/(2)*-5 + (1)/(2)*10, (1)/(2)*9 + (1)/(2)*8)`

2) Solve it.

=
`(-2.5 + 5, 4.5 + 4)`

= (2.5, 8.5)