Jika kurva y=2x^2+3y+10 dicerminkan terhadap garis y=-x, persamaan bayangannya adalah

Kurva y=2x²+3y+10 dicerminkan terhadap garis y=-x
[tex] \left[\begin{array}{ccc}x'\\y'\end{array}\right] = \left[\begin{array}{ccc}0&-1\\-1&0\end{array}\right] \left[\begin{array}{ccc}x\\y\end{array}\right] [/tex]
Maka
x'=-y
y= -x'
y' = -x
x= -y'
y= 2x²+3y+10
-y=2x²-3y+10
y= -2x²+3y-10