You can put this solution on YOUR website! In the problem, are you given values for m and b? If you don't have values of these, then you won't be able to graph the line.
You can put this solution on YOUR website! is the y-intercept, so you plot a point on the y-axis at 40 is the slope, so you would go 10 units up and 1 unit right ... or ... ten units down and 1 unit to the left