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Questions  

Equation of the line passing through the point (a  1, a + 1) and making zero intercept on both axes is  

a
ax + ay – 1 = 0
b
(a + 1)x + (a – 1)y = 0
c
(a + 1)x + (a – 1)y = 0
d
(a + 1)x – (a – 1)y = 0

detailed solution

Correct option is D

Since the line makes zero intercept on both the axes, it must pass through the origin. So equation of theline is y=a+1a-1x as the slope of the line is  a+1-0a-1-0or (a+1)x−(a−1)y=0

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