Help :(

Assume the y varies inversely with x and y = -3 when x = 4. Write the indirect variation equation for the relationship.

Question

Help :(

Assume the y varies inversely with x and y = -3 when x = 4. Write the indirect variation equation for the relationship.

johnweldon1993 · Answer

Inversely means

$$y = \frac{ k }{ x }$$

anonymous · Answer

Wait is xy = -12 right??

johnweldon1993 · Answer

So plug in your 'x' and 'y' and solve for 'k'

$$-3 = \frac{ k }{ 4 }$$

multiply both sides by 4

$$k = -12$$

So now your equation would be

$$y = \frac{ -12 }{ x }$$

Hope that helps

johnweldon1993 · Answer

And yes...what you wrote is the same as what I wrote....notice if you divide both sides of YOUR equation by x...you get what I get :)

anonymous · Answer

Cool :) Thanks :)

johnweldon1993 · Answer

No problem! :)