tulislah persamaan garisnya

[tex]y - y1 = m(x - x1) \\ y - 3 = \frac{1}{2} (x - 6) \\ y - 3 = \frac{1}{2} x - 3 \\ y = \frac{1}{2} - 3 + 3 \\ y = \frac{1}{2} x[/tex]