Q.
The combined equation of straight lines that can be obtained by reflecting the lines y=x-2 in the y-axis is
see full answer
Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!
Real Strategies. Real People. Real Success Stories - Just 1 call away
An Intiative by Sri Chaitanya
a
y2+x2+4x+4=0
b
y2+x2−4x+4=0
c
y2−x2+4x−4=0
d
y2−x2−4x−4=0
answer is D.
(Unlock A.I Detailed Solution for FREE)
Ready to Test Your Skills?
Check your Performance Today with our Free Mock Test used by Toppers!
Take Free Test
Detailed Solution
If we reflect y=x-2 in y-axis, it will becomes y=|−x−2|=|x+2|. The reflected lines are y=x+2, y=−x−2. Their combined equation is (y−x−2)(y+x+2)=0⇒y2−(x+2)2=0⇒y2−x2−4x−4=0
Watch 3-min video & get full concept clarity