Use the graph to find the constant of variation. then write the direct variation equation.11 question 2 options: constant of variation= 1/2; y = 1/2 x conuse the graph to find the constant of variation. then write the direct variation equation.11 question 2 options: constant of variation= 1/2; y = 1/2 x constant of variation = 2; y = 2x constant of variation = -1/2; y = -1/2 x constant of variation = -2; y = -2xstant of variation = 2; y = 2x constant of variation = -1/2; y = -1/2 x constant of variation = -2; y = -2x