The negative 3 represents the slope of the line the +2 represents the y intercept and you would start by graphing a dot at the coordinates (0,2) as that is the y intercept and the. You would move 3 up and one to the left to show the slope after that you would go back to the starting dot and go 3 down and one to the right to check if it is correct you would choose one point where the line lands on a line on the graph and you get the coordinates for then you would plug this into the equation. If the equation is correct then you did it correctly