  Math Central - mathcentral.uregina.ca  Quandaries & Queries    Q & Q    Topic: indirect   start over

4 items are filed under this topic.    Page1/1            Direct, inverse and indirect proportionality 2009-03-04 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 BrianAnswered by Chris Fisher.     A proof by contraposition 2006-03-16 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.     A linear function 2002-09-09 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.     Proportionality: direct and indirect 2001-01-18 From Nancy Ellis:What is the difference between directly proportional and indirectly proportional?Answered by Leeanne Boehm.      Page1/1    Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences.    about math central :: site map :: links :: notre site français