We need to find the slope and y-intercept. Firstly, let’s find the y-intercept. The y-intercept is where the line intercepts the y-axis, so the coordinate will be (0, y-intercept). According to the table, that would be (0, -20).
Next, we can find the slope by finding the change in y, and then dividing that by the change in x. In other words, y2-y1/x2-x1. Let’s pick two coordinates, (0, -20) and (5, -10). Once we plug in our numbers, we get -10-(-20)/5-0 which is 10/5 which is 2.
The y-intercept is (0, -20), and the slope is 2.