Answer
$m=\dfrac{2}{3}$
See the graph below.
Work Step by Step
The slope of the line that passes throught two points $(x_1, y_1)$ and $(x_2, y_2)$ can be found using the formula:
$m=\dfrac{y_2-y_1}{x_2-x_1}$
Thus, the slope of the line passing through the two given points is:
$m=\dfrac{3-1}{2-(-1)}=\dfrac{2}{3}$
To graph, plot both points then connect them using a straight line.
Refer to the graph above.
