Question

HELP REALLY NEEDED ASAP
What is the coordinate of the midpoint of WQ


-2
4
2
0

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Answer 1

The formula for the midpoint between any pair \(a\) and \(b\) is this:
\[m=\frac{a+b}2\]
It's the average!

If you can't remember, there is a derivation. The whole length between \(a\) and \(b\) is \(b-a\).
The distance from \(a\) to the midpoint is \(\frac12(b-a)\). Then simplify!
So, the midpoint is at \(a+\frac12(b-a)\).
\[a+\frac12(b-a)=\\a+\frac12b - \frac12a=\\\frac12b+a-\frac12a=\\\frac12b-\frac12a=\\\frac12(b-a)\]