Simplify more divide through by Dx. You first need to find the derivative. Review how to take a variety of derivatives from common functions.
The slope of a line is the ratio between the vertical and the horizontal change DyDx.
With this installment from Internet pedagogical superstar Salman Khans series of free math tutorials youll learn how to use derivatives to find the slope at any point along f xx2. Let f x x2. The answer given before was correct. Between x 0 and x 1 y only increases by 1.