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Verified answer
Jawab :A. y = 2x + 3
m1 = 2 => 2/1
m1 // m2 => m2 = 2
m1 tegak lurus m2 => m2 = - 1/2
b. 6x - 2y - 4 = 0
a; 6 , b = -2 > m1 = -(6/-2) = 3/1
m1 // m2 => m2 = 3/1
m1 tegak lurus m2 => m2 = - 1/3