Which following equation describe the line shown (-4,4) & (2,1)

Solve for the slope (m) of the line first by the equation, 
                             m = (y2 - y1) / (x2 - x1)
Substituting the coordinates of the given points to the equation,
                             m = (1 - 4) / (2 - -4) = -0.5
The equation of the line may be expressed in slope-point form whose general expression is y - y1 = m(x - x1). Substituting, y - 4 = -0.5(x - -4). Further simplification of the equation will give an answer of, 
                                            y = -0.5x +2
                       
                              

The unit price is 0.99

Bis your answer rot d