5.02 Direct and inverse variation
Interactive practice questions
Suppose the constant of variation $k$k is positive.
If $y$y varies directly as $x$x, which of the following is true?
When $x$x increases, $y$y increases. When $x$x decreases, $y$y decreases.
When $x$x increases, $y$y decreases. When $x$x decreases, $y$y decreases.
When $x$x increases, $y$y increases. When $x$x decreases, $y$y increases.
When $x$x increases, $y$y decreases. When $x$x decreases, $y$y increases.
If $y$y varies inversely as $x$x, which of the following is true?
When $x$x increases, $y$y decreases. When $x$x decreases, $y$y increases.
When $x$x increases, $y$y increases. When $x$x decreases, $y$y decreases.
When $x$x increases, $y$y decreases. When $x$x decreases, $y$y decreases.
When $x$x increases, $y$y increases. When $x$x decreases, $y$y increases.
Which of the following is the best description of direct proportion?
Which of the follow is the best description of inverse proportion?
Which of the lines below model direct variation between the two variables?