Question

Find the equation of the circle

(x + 2)2 + (y + 5)2 = 4
tve
when it is reflected about y = 2x + 1.

Answer 1

2x+4+2y+10=4

2x+2y=4-10-4

2(x+y)=-10

x+y=-10/2

x+y=-5

x+2x+1=-5

3x=-6

x=-6/3

x=-2