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y' = -2x +2 => m = y'(x)
m = -2(-2) + 2
= 4 + 2
m = 6
y = -(-2)^ + 2(-2) -5
= -4 - 4 - 5
= -13
pgs
y-y1 = m(x-x1)
y - (-13) = 6(x - (-2))
y + 13 = 6x + 12
y = 6x -1
6x - 1 - y = 0 atau y - 6x + 1 = 0