If $P$ has coordinate $a$ and $Q$ has coordinate $b$ ($a < b$), midpoint $M$ of $PQ$ has coordinate

If $P$ has coordinate $a$ and $Q$ has coordinate $b$ ($a < b$), midpoint $M$ of $PQ$ has coordinate
  1. $\dfrac{a + b}{2}$
  2. $\dfrac{b - a}{2}$
  3. $ab$
  4. $\dfrac{a}{b}$

Solution

Midpoint formula on a number line.

Asked in: MH-SSC-9

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