Straight LineMedium
Question
Combined equation of pair of image lines of the pair of straight lines y2 - 2xy - 4y + 8x = 0, on x-axis, is-
Options
A.y2 + 2xy + 4y - 8x = 0
B.y2 + 2xy - 4y - 8x = 0
C.y2 - 2xy + 4y - 8x = 0
D.y2 + 2xy + 4y + 8x = 0
Solution
Equation of pair of image is (Replace y by - y)
y2 + 2xy + 4y + 8x = 0
y2 + 2xy + 4y + 8x = 0
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