Question

Tolong dong urgent
L = x²+y²+10x-6y-30=0
Dicerminkan terhadap garis y = -x
Persamaan L adalah....

Answer 1

L = x^2 + y^2 + 10x - 6y - 30 di cerminkan y=-x
———> L = (-y)^2 + (-x)^2 + 10(-y) - 6(-x) - 30
L = y^2 + x^2 - 10y + 6x - 30
L = x^2 + y^2 + 6x - 10y - 30

Sayarat pencerminan y=-x
Variabel x diganti -y
Variabel y diganti -x

Maaf yaaa kalau salah, semoga membantu ^_^