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Untuk titik (0,-2)
y = mx + c
-2 = m(0) + c
c = -2
Untuk titik (4,0)
y = mx + c
0 = 4m - 2
m = ½
Persamaan garis l
y = mx +c
y = ½x - 2
Garis k melalui titik (0,-4)
Karna sejajar maka gradien gari sl dan k sama
y = mx + c
-4 = (½)(0) + c
c = -4
Persamaan garis k
y = mx + c
y = (½)x - 4
2y = x - 8
x - 2y - 8 = 0
(A)
Yg no. 25 maafkan jika salah