Question: If $ P( \frac{a}{3},4 ) $ is the mid-point of the line segment joining $ A,(-,6,5) $ and $ B,(-,2,,3), $ then a is equal to
Options:
A) (a) $ -,4 $
B) (b) $ -12 $
C) 12
D) $ -,6 $
Show Answer
Answer:
Correct Answer: B
Solution:
- We have, $ =\frac{-,6+(-,2)}{2}=\frac{a}{3} $
$ \Rightarrow $ $ \frac{a}{3}=\frac{-,8}{2} $
$ \therefore $ $ a=-12 $