| Direct Variation |
Using “k” as the constant of proportionality, write an equation modeling the following direct variation. Then solve for the unknown.
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General Questions |
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y varies directly with x. If y = 15 when x = 3, find y when x is 1. |
| p is directly proportional to q. If q = 6 when p = 18, find q when p is 10. |
| v varies directly with m. If v = 10 when m = 1/3 , find v when m is 10. |
| r varies directly with w-1. If r = 0.06 when w = 3, find r when w is 10. |
| n is directly proportional to t + 3. If t = 2/5 when n = 17, find t when n = 17.5 . |
| b varies directly as the square root of c. If b = 1 when c = 16, find b when c is 9. |
| z varies directly as the cube of d. If z = 175 when d = 5, find z when d is 2. |
| g is directly proportional to the square of a. If a = -3 when g = -9, find a when g is -25. |
a varies directly with the square of r. If r = 3 yields  , find r when a is  . |
v is directly proportional to the cube of r. If  when r = 5, find v when r is 3. |
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K Dodd
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