For the function 4 V = + 2x r - 2 identify the coordinates of four points such that the slope of the tangent line at that point is: . zero . undefined . positive . negative . Evaluate the derivative at the points identified in step 1. . Write a paragraph summarizing the relationship between the continuity of a function, the limit of a function, the slope of a tangent line, and the derivative evaluated at a point. Use your work in Discussions 1-4 to support the conclusion