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y-2 = -2/4 ( x-0)
y-2 = -1/2 x kalikan 2
2y - 4 = -x
x + 2y = 4
jawaban A
no 30 )
x+2y-4=0
x+2y = 4
jika x = 0 maka y = 2
jika y = 0 maka x = 4
jawaban A