garis k:-6x+y+11=0 di translasi [2,-1] dilanjutkan refleksi terhadap garis y=-3 tentukan bayangan akhir

-6x + y + 11 = 0
T[2,-1]

x' = x + 2 ---> x = x' - 2
y' = y - 1 ---> y = y' + 1

-6x + y + 11 = 0
-6(x' - 2) + (y' + 1) + 11 = 0
-6x + y + 24 = 0

••
refleksi thd y = -3
x' = x
y' = 2(-3) - y ---> y = -6 - y'

Hasil akhir :
-6x + y + 24 = 0
-6x' + (-6 - y') + 24 = 0
-6x - y + 18 = 0 ✔