Question

what is the coordinate of the midpoint of ef? write your answer as an integer or a decimal, or mixed number in simplest form.

Explanation:

Step1: Identify endpoints

The coordinate of point E is - 15 and the coordinate of point F is 10.

Step2: Use mid - point formula

The mid - point formula for two points \(x_1\) and \(x_2\) on a number line is \(M=\frac{x_1 + x_2}{2}\). Here \(x_1=-15\) and \(x_2 = 10\). So \(M=\frac{-15 + 10}{2}\).

Step3: Calculate the value

\(\frac{-15 + 10}{2}=\frac{-5}{2}=-2.5\)

Answer:

-2.5