tentukan persaaman garis yang melalui titik (0.-4) dan m=1/2

y-y1 = m (x-x1)
y-(-4) = 1/2 (x-0)
y+4 = 1/2x
2(y+4) = 2 x 1/2x
2y+8 = x
2y-x+8 = 0

*semoga membantu. sukses selalu ^_^

[tex]y - y1 = m(x - x1)[/tex]
[tex]y - ( - 4) = \frac{1}{2} (x - 0)[/tex]
[tex]y + 4 = \frac{1}{2} x[/tex]
[tex]y = \frac{1}{2} x - 4[/tex]
[tex]2y = x - 8[/tex]