Secant and Tangent Lines on Parabola 2

Topic:
Parabola
Use the sliders to change the equation of the parabola. Move the red point on the parabola to change the secant line. Move it close to the tangent point to see the slope of the secant line approach the slope of the tangent line. Now move the tangent point along the graph to see how the slope of the tangent line changes.