Top One
The equation for the top one looks like it is
y = (5/3) * x
So for example (5/3) 15 = 25 which is y is shown to be in the table of values.
Varies directly
Middle Table
Stupid as the question may seem, the answer is varies inversely. As the number of parachutes goes down the price per shute goes up. Maybe it does make sense.
Varies inversely.
Last Table
This one at least makes sense. As the cost of making the parachute goes up, so does the selling price.
Varies directly.
