Math: Direct Variation

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what are the formulas that illustrates direct blinear variation ?? please help me !! i can't find any formula !! .. humpf .. :(

  • Math: Direct Variation -

    I am wondering if it is formulas you need or understanding.

    First: Bilinear variation, or linear variation. There is a BIG difference.

    Second: formulas indicate some question you have. What is it exactly you are trying to do?

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