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Y=2
.
maka gradien nya adalah
m = - y/x
m = -2/3
persamaan garis
y - y1 = m(x - x1)
y - 2 = -2/3 (x-3)
y - 2 = -2/3x + 2
y + 2/3x - 4 = 0
masing2 dikalikan 3
3y + 2x - 12 = 0
→2x + 3y = 12