Find the general expression for the slope of a line tangent to the curve of y=x2 +4x at the point P(x,y). Then nd the slopes forx = - 3 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 = x2 + 4x at the point P(x,y)? mtan =|:| The slope for x = - 3 is The slope for x = 0.5 is Sketch the curve of y = x2 + 4x and the line tangent to it at x = - 3. Choose the correct graph below