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Direct, inverse and indirect proportionality |
2009-03-04 |
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From Brian:
My 14 year old is confused about indirectly proportional and inversely proportional. On searching on the internet we were directed to:
http://mathcentral.uregina.ca/QQ/database/QQ.09.00/ellis1.html
Here leanne starts explaining indirectly proportional and ends up describing inversely proportional. Has Leanne got it wrong ?
What is indirectly proportional.
Thanks
Brian
Answered by Chris Fisher. |
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A proof by contraposition |
2006-03-16 |
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From Eban:
1)by mathematical induction prove that 12 + 32 + 52 + ...... + (2k-1)2 = (1/3)k(2k-1)(2k+1) for all positive integers k.
2)show that the contrapositive of the following statement is true. if 1 + M7 is even, then M is odd.
Answered by Stephen La Rocque. |
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A linear function |
2002-09-09 |
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From Chad:
If y = 9x - 13 does it represent a linear function? And if it does what is its slope and is it a direct variation?
Answered by Peny Nom. |
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Proportionality: direct and indirect |
2001-01-18 |
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From Nancy Ellis:
What is the difference between directly proportional and indirectly proportional?
Answered by Leeanne Boehm. |
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