1. The problem statement, all variables and given/known data X-intercepts: (-1.57,0) , (0.65, 0) , (2.83, 0) Y-intercept: 11.33 2. Relevant equations I've got to convert that information into an estimated cubic function. 3. The attempt at a solution I tried subbing the y-intercept in; although that didn't work. 11.33 = K(1.57)(-0.65)(-2.83) 11.33 = K(2.888) K = 3.923 That didn't provide the correct equation when subbed into f(x)=K(x+1.57)(x-0.65)(x-2.83) Can anyone help me on this?