Variation problems involve fairly simple relationships or formulas, involving one variable being equal to one term. That term might be linear (something with just an "x"), quadratic (something in "x2"), more than one variable (such as "r2h"), a square root (something like "
"), or something else. But it is always just the one term in the formula, multiplied by some number, usually denoted by "k" if you don't yet know the number's value; this number k is called "the constant of variation".
"), or something else. But it is always just the one term in the formula, multiplied by some number, usually denoted by "k" if you don't yet know the number's value; this number k is called "the constant of variation".