Question

The experimental data in the table below define y as a function of x.
x 0 1 2 3 4 5
y 2.4 1.3 0.8 0.9 1.4 2.4


A. Let P be the point (2, 0.8). Find the slopes of the secant lines PQ when Q is the point of the graph with x coordinate x1.
x1 0 1 3 4 5
slope


B. Draw the graph of the function for yourself and estimate the slope of the tangent line at P.