Question

If $P(\frac{a}{2},4)$ is the mid-point of the line-segment joining the points A(-6,5) and B(-2,3), then the value of a is

• A. $-8$
• B. $3$
• C. $-4$
• D. $4$

Answer 1

The correct option is A $-8$

Given P is the mid point of AB,where $A(-6,5)$ and $B(-2,3)$

$\therefore$ $\frac{a}{2}=\frac{-6+(-2)}{2}$

$\therefore a=-8$