Science

Math

Humanities

... and beyond

Socratic Meta
Featured Answers

Topics

Given y inversely proportional to x and x = 3 for y = 6, what is x if y = 9?

1 Answer

Apr 6, 2018

$x = 2$ $x=2$

Explanation:

If $y$ $y$ is inversely proportional to $x$ $x$ , then $y = \frac{k}{x}$ $y=k/x$ for some value $k$ $k$ .

When $x = 3$ $x=3$ , $y = 6$ $y=6$ . So $6 = \frac{k}{3} \Rightarrow k = 18$ $6=k/3=>k=18$

$therefore y=18/x$

If $y=9$ , $9=18/x=>x=2$

Related questions

See all questions in Direct Variation

Impact of this question

6443 views around the world

You can reuse this answer
Creative Commons License