Hence , the given situation does not represents a proportional relationship .
- A proportional relationship is one within which 2 quantities vary directly with one another. we are saying the variable y varies directly as x if y=kx for some constant k , referred to as the constant of proportion .
It is given that each game costs $39.99 and $4.85 shipping charge per order.
Let "x" be the number of video games and "b" be the shipping charge per order and "y" be the total cost .
Then above situation is represented by equation
y = 39.99 x + 4.85
As this equation is not the type of equation y =kx hence , it is not proportional.
Above equation is not proportional because the graph of this equation is not straight line.
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