Y= -2x - 2, wherever you you touch the y axis is you y intercept (b) and your x is slope (m) so for example, here you go up 2 and left 2 (-2/1) and since you go left, the slope becomes negative. Another easy way of finding and eliminating slop answers is by check if you can make an N with the line (The N will stand for negative) making it many times easier for you to get your slope.
