Direct and Inverse Variation Answers

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Norman makes $15 commission for selling $200 in merchandise. He makes $37.50 commission for selling $500 in merchandise. Assuming that the variables are directly related and Norman wants to make $150 in commission, what is the total value of merchandise he needs to sell?

In a company, it takes 4 employees 4 days to complete a task. It would take 2 employees 8 days to complete the same task.

Which equation represents a direct variation?

The amount of resistance, y, in a circuit varies inversely to the current, x, in the circuit. When 10 ohms of resistance are used in the circuit, 12 amperes of current are present. When 5 ohms of resistance are used in the same circuit, 24 amperes of current are present.

When x = 3, y = 16 and when x = 6, y = 8. Which inverse variation equation can be used to model this function?

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In a function, y varies directly with x, and the constant of variation is 2. Which table could represent this function?

A 20-ounce candle is expected to burn for 60 hours. A 12-ounce candle is expected to burn for 36 hours. Assuming the variables are directly related, how many hours would a 9-ounce candle be expected to burn?

One week, Kerry travels 125 miles and uses 5 gallons of gasoline. The next week, she travels 175 miles and uses 7 gallons of gasoline.