Which is an example of a direct variation? [tex]a. \: xy = 10[/tex] [tex]b. \: y = \frac{2}{x} [/tex] [tex]c. \: y = 5x[/tex] [tex]d. \: \frac{2}{y} = x[/tex]
For example, if y varies directly as x, and y = 6 when x = 2, the constant of variation is k = = 3. Thus, the equation describing this direct variation is y = 3x.
