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4 items are filed under this topic.
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If x ix directly proportional to y then ... |
2012-02-19 |
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From Crystal:
I understand that we say x and y are proportional, then y = kx.
Generally when we say x is proportional to y, we think that when x increases y increases.
Now I am questioning whether that is actually true.
If k is negative, then when x increases, y DECREASES.
My question is does this mean this statement is incorrect:
If x is proportional to y, when x increases, y increases proportionally.
Is it more correct to say:
If x is proportional to y, when x increases, y either increases proportionally or decreases proportionally.
Along the same line of reasoning, when x is inversely proportional to y,
we think that when x increases y decreases, but that is true only if k is positive.
Is that correct?
Answered by Harley Weston. |
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Proportionality |
2009-11-03 |
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From Nazrul:
If x is proportional to y , how can I prove that (x^2-y^2) is proportional to xy.
Please explain the process.
Answered by Penny Nom. |
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Proportionality |
2009-06-29 |
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From Nazrul:
If x is proportional to y and y is proportional to z , how can I prove that (x^2+y^2)^3/2 is proportional to z^3
Answered by Harley Weston. |
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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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