Consider the function $f(x)$ shown in the graph below.

$($You can click on the graph to enlarge the image.$)$

Use the graph above to estimate the derivative of $f$ at the points shown in the table below. At a given point place a straightedge so that it forms the line tangent to the graph of $f$ at that point, and then use the grid to estimate the slope of the tangent line. You can double check those values by carefully sketching the graph of derivative function, $f^{\text{'}}.$

$\backslash$table$[[x=,-3,-1,1,3],[f^{\text{'}}(x)=,,,,$