Tangent Problem
Slope of a Tangent Line
Move the point Q along the x-axis (red dot). Note that when the points P and Q coincide the slope of QP is not given. How can you determine the slope of the tangent line at the point p.
- Using the graph below estimate the slope of the the tagent line when the x-coordinate of P is 0?
- Using the idea of limits, determine the the slope of the the tangent line when the x-coordinate of P is 0?