y varies directly as x. If y = 16 when x = 4, what is the constant of variation?
Note
For direct variation, y = kx. Substitute the given values: 16 = k × 4. Therefore k = 16 ÷ 4 = 4.
y varies directly as x. If y = 16 when x = 4, what is the constant of variation?
For direct variation, y = kx. Substitute the given values: 16 = k × 4. Therefore k = 16 ÷ 4 = 4.