Find the general expression for the slope of a line tangent to the curve of y = 3x + 2x at the point P(x,y). Then find the slopes for x = - 2 and x = 0.5. Sketch the curve and the tangent lines. What is the general expression for the slope of a line tangent to the curve of the function y = 3x" + 2x at the point P(x,y)? mtan =