To find the slope from data in a table you will have to use the formula y2-y1/x2-x1. For example lets say in a table the x column includes -2 and -1 while the y column includes 8 and 2. You take these numbers and input them into the slope formula, your formula will now be 2-8/-1-(-2). You subtract 8 from 2 to get -6 and subtract 2 from -1 to get 1. You put them together to get -6/1 or -6 if simplified as your slope. In conclusion, to find the slope from data in a table you will need to use the formula y2-y1/x2-x1.