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m1=m2
m2=4
x1=-5 y1=3
y-y1=m2(x-x1)
y-3=4(x+5)
y-3=4x+20
y=4x+20+3
y=4x+23
karena sejajar m1 = m2 = 4
persamaan garis Y - Y1 = m.(X - X1), sehingga:
Y - 3 = 4.(X - (-5))
Y - 3 = 4.(X + 5)
Y = 4X + 20 + 3
Y= 4X + 23