Question

Ada yang bisa bantu? nomer 10

Answer 1

→ garis ←

garis p :

mx + 2y = 4

m1 = -a/b = -m/2

garis q :

(m - 1)x - 6y = 5

m2 = -(m - 1)/(-6)

m2 = (m - 1)/6

saling tegaklurus → m1 × m2 = -1

m1 × m2 = -1

-m/2 × (m - 1)/6 = -1

m(m - 1) = 2 × 6

m² - m - 12 = 0

(m - 4)(m + 3) = 0

m = 4 atau m = -3

Nilai m positif yg memenuhi :

m = 4