- #1

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directly proportional? can anyone give an example of it?

thanks alot!

thanks alot!

- Thread starter sotellme
- Start date

- #1

- 75

- 0

directly proportional? can anyone give an example of it?

thanks alot!

thanks alot!

- #2

Pyrrhus

Homework Helper

- 2,178

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y and x are directly proportional, A is a constant.

[tex] y = Ax [/tex]

[tex] \frac{y}{x} = A [/tex]

[tex] y = Ax [/tex]

[tex] \frac{y}{x} = A [/tex]

- #3

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Right. This is represented as [tex]y\propto x[/tex].

- #4

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thanks!

- #5

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- #6

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cyby said:

hi cyby! what you mean with that? do you mean that A must always be a positve number if not it will be inversely proportional?

- #7

Tom Mattson

Staff Emeritus

Science Advisor

Gold Member

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No, that's not true. It's still a direct proportion. y and x are inversely proportional if y=A/x.cyby said:

- #8

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Uh, you are right. Sorry, was thinking about something else completely.

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