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Mapel : Matematika
Bab : Persamaan Garis Lurus

17)

(-1,4) dan (6,1)

m = y2 - y1/x2 - x1
m = 1 - 4/6 + 1
m = -3/7

(C)

18)

PGL Sejajar

PGL G

(-1,0) dan (0,-2)

y-y1/y2-y1 = x-x1/x2-x1

y - 0/-2 - 0 = x + 1/0 + 1

y/-2 = x + 1 /1

y = -2x - 2

m1 = -2

PGL H

y - y1 = m(x - x1)
y - 6 = -2(x - 0)
y - 6 = -2x
y = -2x + 6

(A)