Direct and Inverse Variation Quiz

Direct and Inverse Variation 1. Give a real world example of a direct variation.

2. Give a real world example of an inverse variation.

For each problem, set up an equation/proportion and solve 3. y varies directly as x and y = 450 when x = 6. Find y when x = 10.

4. Given that y varies directly as x, and that y = 20 when x = 5, find A) the constant of variation B) the value of y when x = 9

5. The amount a babysitter earns is varies directly as the number of hours worked. If $7 is earned for 4 hours of work, how much is earned for 10 hours of work?

6. x varies inversely as y, and y =10 when x = 6. Find y when x = 15.

7. Given that y varies inversely as x, and that y = 3 when x = 6, find y when x = 36.

8. The amount of pizza that Kirby can buy varies inversely as the price of the pizza increases. Kirby can afford to buy 3 pizzas that cost $15.00 each. How many pizzas that cost $9.00 each can he buy?

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