bayangan garis y=2x+2 yg di cerminkan ke y=x adl..?

[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] \left[\begin{array}{ccc}x'\\y'\\\end{array}\right] = \left[\begin{array}{ccc}y\\x\\\end{array}\right] y=2x+2 x'=2(y')+2 x=2y+2[/tex]