Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Let ax + by + c = 0 be a variable straight line, where a, b and c are 1 st , 3 rd and 7 th terms of an increasing A.P. respectively. Then the variable straight line always passes through a fixed point which lies on-
Text Solution
Verified by ExpertsThe correct answer is:
D
Let the common difference of A.P. is d
then b = a + 2d and c = a + 6d, so variable straight line will be
ax + (x + 2d)y + a + 6d = 0
⇒ a(a + y + 1) + d(2y + 6) = 0
which always passes through (2, –3).
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