Bayangan garis 2x-3y+5=0 dicerminkan terhadap garis y = 4 adalah.... Question from @donypurnama

October 2018 1 34 Report

Bayangan garis 2x-3y+5=0 dicerminkan terhadap garis y = 4 adalah......

GOSPGO (x,y)--->(x',y')=(x, 2.4-y)
x' = x
y'=8-y maka y = 8-y' substitusikan x dgn y
2(x')-3(8-y')+5=0
2x-24+3y+5=0
2x+3y-19=0 bayangan garis

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