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Question

Question: If the line ax +by + c = 0 is a normal to the curve xy = 1 then...

If the line ax +by + c = 0 is a normal to the curve xy = 1 then

A

a, b, ∈ R

B

a > 0, b > 0

C

a < 0, b > 0 or a > 0, b < 0

D

a < 0. b < 0

Answer

a < 0, b > 0 or a > 0, b < 0

Explanation

Solution

ax + by + c = 0 is

Normal to xy = 1

compare the slopes of Normal