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Kelas : VIII SMP
Bab : Persamaan Garis Lurus
Pembahasan :
y = mx + c ——» m = Gradien
y = 1/2x - 4 ——» m = 1/2
Syarat sejajar
M1 = M2 = 1/2
Maka Persamaan Garisnya...
Y - Y1 = M2(X - X1)
Misal titik (2,1)
y - 1 = 1/2(x - 2)
2y - 2 = x - 2
2y = x
y = 1/2 x