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December 29th, 2008, 04:35 PM
| | Newbie | | Join Date: Dec 2008 Location: Wellington ,FL
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| |  Direct Variation
First of all, I am new ,so hello.
now to the topic:
is the formula for direct variation y=kx
and could you please post examples? |
December 29th, 2008, 04:39 PM
|  | He's dead, Jim | | Join Date: Jan 2008 Location: Big Stone Gap, Virginia
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Quote:
Originally Posted by Russian  First of all, I am new ,so hello.
now to the topic:
is the formula for direct variation y=kx
and could you please post examples? | This is correct. y varies directly as x.
k is called the constant of proportionality or the constant of variation.
Google: direct variation - Google Search
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December 29th, 2008, 04:49 PM
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Quote:
Originally Posted by masters | so you use the formula and then plug the answer as k? |
December 30th, 2008, 07:43 AM
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Quote:
Originally Posted by Russian so you use the formula and then plug the answer as k? | Example: d = rt (distance = rate X time)
Let r be the constant of variation.
The distance (d) varies directly as time (t) if r remains constant. In other words, when t increases, d increases. When t decreases, d decreases.
Follow some of the links I gave you and you'll see other examples.
Also, investigate inverse and joint variation as well.
__________________ He who knows not and knows not that he knows not is a fool, shun him. He who knows not and knows that he knows not is a child, teach him. He who knows and knows not that he knows is asleep, wake him. And he who knows and knows that he knows is wise, follow him.
-- Persian Proverb
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January 1st, 2009, 05:26 PM
| | Newbie | | Join Date: Dec 2008 Location: Wellington ,FL
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Quote:
Originally Posted by masters Example: d = rt (distance = rate X time)
Let r be the constant of variation.
The distance (d) varies directly as time (t) if r remains constant. In other words, when t increases, d increases. When t decreases, d decreases.
Follow some of the links I gave you and you'll see other examples.
Also, investigate inverse and joint variation as well. | thank you, masters | | Thread Tools | | | | Display Modes |  Linear Mode | 
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