PLEASE HELP! Determine the slope and the y-intercept of the table.

To find the slope, use two (or three) points and plug them into y2 - y1/ x2 - x1.
Once you have the slope, plug one point and the slope into . . .yup, point-slope form. y-y₁=m(x-x₁)
After doing this, you will have the slope and the y-intercept.