Question

using the midpoint formula, solve for the midpoint of the segment with these pairs of endpoints (20,-15) and (-11,-10)​

Answer 1

(9/2, -25/2)

Explanation:

The Midpoint Formula: The midpoint of the segment joining points
`(x_1,\,y_1)` and
`(x_2,\,y_2)` is
`\left((x_1+x_2)/(2),\,(y_1+y_2)/(2)\right)`.

`\left((20+(-11))/(2),\,(-15+(-10))/(2)\right)`

`((9)/(2),\,-(25)/(2))`

By the way, instead of trying to memorize the formula, why not just think the x-coordinate of the midpoint is the average of the x-coordinates of the points. The y-coordinate of the midpoint is the average of the y-coordinates of the points.

The average of two numbers is exactly halfway between them!