Respuesta :

DWRead
(0,7) and (3,1) are points on the line.

Slope of line passing through (x₁, y₁) and (x₂, y₂) = (y₂-y₁)/(x₂-x₁)

Slope of line passing through (0, 7) and (3, 1) = (1-7)/(3-0) = -2