Assume that y varies inversely with x and that y is 2 when x is 4. Which of the following is the equation of inverse variation?

Question

3775 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-05-24T09:08:26

#y=8/x#

The question state: "Which of the following...." The is nothing shown after the question so ' the following ' part of the question is missing.

Given:#" "y" " alpha" " 1/x" The "alpha" means - proportional to"#

Let #k# be the coefficient of proportionality

#y=kxx 1/x = k/x#

Given that at #y=2# the value of #x# is 4

# 2=k/4#

Multiply both sides by 4

#8=k#

So the final equation is:

#y=8/x#