Question 142245
Use the model for inverse variation.

The model for direct variation is:
{{{y = k/x}}}

Substitute {{{10}}} for {{{x}}} and {{{7}}} for {{{y}}}:
{{{7 = k/10}}}
{{{7*10 = k}}}…..

{{{k=70}}}…….


The inverse variation equation that relates {{{x }}}and {{{y}}} is:

 {{{y = 70/x}}}.........substitute {{{x}}} for {{{5}}}
{{{y = (70/5)}}}
{{{y = 14 }}}

If {{{x}}} is {{{5}}}, then {{{y}}} is {{{14}}} .