bagaimana ya kak caranya?bisa tolong di bantu jawab kak?

1). gradien (m) = 1/2
     titik (x₁,y₁) = (4,4)\
     persamaan garisnya => y - y₁ = m (x - x₁)
                                            y - 4  = 1/2 (x -4)
                                            y - 4  = 1/2x - 2
                                            -1/2x + y - 4 + 2 = 0
                                            -1/2x + y - 2       = 0 atau
                                         ------------------------------- (-2)
                                                x -2y + 1         = 0
dan seterusnya...