Using a table and graph to find slope:
Take two sets of points, and use the formula

, where
y1= the y-coordinate of the first point
y2 = the y-coordinate of the second point
and
x1= the x-coordinate of the first points
x2= the x-coordinate of the second point.
If you want a walkthrough of how to use this formula, PM me and I'd be glad to help you as soon as I can :)