Straight Line Question 135
Question: The image of a point $ A(3,8) $ in the line $ x+3y-7=0 $ , is [RPET 1991]
Options:
A) $ (-1,-4) $
B) $ (-3,-8) $
C) $ (1,-4) $
D) $ (3,8) $
Correct Answer: AShow Answer
Answer:
Solution:
Þ $ \frac{x_1+3}{2}=1\Rightarrow x_1=-1 $ and $ \frac{y_1+8}{2}=2 $
Þ $ y_1=-4 $ . Hence the image is (?1, ?4).