I am using a polynomial trendline to project sales based on volume. When I switch the axis on the graph (for projecting volume based on sales) I get this trendline equation: y = 1E-09x2 + 0.0041x + 636.28. What is -09x^2?
The inverse function works perfectly (y = -0.0027x2 + 180.4x + 9415.8)
The inverse function works perfectly (y = -0.0027x2 + 180.4x + 9415.8)