Answer:
Plot two points and draw a line through them
Explanation:
The graph is created for this the same way it is for any function: find some points on the graph, plot them, and draw an appropriate curve through them.
Since this is a linear equation, the graph is a straight line. Only two points are needed to allow you to plot the entire line.
For b=0, the point is (b, C) = (0, 4.95)
For b=5, the point is (b, C) = (5, 24.90)
The graph might look like the attached.
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For b=5, the equation gives ...
C = 4.95 +3.99(5) = 4.95 +19.95 = 24.90