Question

With reference to the graph below, which of the following is true?

• A. $x$ and $y$ are directly proportional
• B. $x$ and $y$ are inversely proportional
• C. $y$ is inversely proportional to the reciprocal of $x$
• D. $x$ is inversely proportional to the reciprocal of $y$

Answer 1

The correct option is B

$x$ and $y$ are inversely proportional

We can see that, as $x$ increases, $y$ decreases. Thus, $x$ and $y$ are inversely proportional.

That is the same as saying, $y$ is directly proportional to the reciprocal of $x$.

or $x$ is directly proportional to the reciprocal of $y$.