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2y = 3x + 7
y = 3/2 x + 7/2
gradien = 3/2
gradien tegak lurus = -2/3
y - 4 = -2/3 (x -(-3))
y - 4 = -2/3 (x+3)
y - 4 = -2/3 x - 2
y = -2/3 x + 2
3y = -2x + 6
3y + 2x - 6 = 0