You can put this solution on YOUR website! The range of y-intercepts can guide you. Read and inspect the range of the y-intercepts, since these three equations are in slope-intercept form. They extend from y=0 to y=10. Give you gragh axes a few more grid units beyond a size of 10, maybe choose y from -10 to +15. Plot each line using its y-intercept and slope; you will simply be using the same graph paper and axes to hold all three lines. You should also label each line graphed.
This graph is fairly enough adjusted so you see about where the lines intersect. Reading those intersections, as well as other points, would be easier on graph paper than as shown here:
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