Straight Line Question 373
Question: In an isosceles triangle ABC, the coordinates of the points B and C on the base BC are respectively (1, 2) and (2, 1). If the equation of the line AB is $ y=2x $ , then the equation of the line AC is [Roorkee 2000]
Options:
A) $ y=\frac{1}{2}(x-1) $
B) $ y=\frac{x}{2} $
C) $ y=x-1 $
D) $ 2y=x+3 $
Correct Answer: B
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Answer:
Solution:
Þ $ m=\frac{1}{2} $ (Here m is the gradient of line AC) \ Equation of line AC is $ y-1=\frac{1}{2}(x-2) $
Þ $ y=\frac{x}{2} $ .
BETA
