Allday Everyday Math on Instagram: "When your equation is already in y = mx + b form, graphing becomes super straightforward. The equation y = ⅓x - 4 tells you everything you need to know before you even touch the graph. Start by identifying your y-intercept, which is -4. That means your line crosses the y-axis at the point (0, -4). Plot that point first. Next, use your slope of ⅓ to find your next point. Slope means "rise over run," so ⅓ tells you to go up 1 unit and right 3 units from your y-i