Question 850243
Graph of Choice A) y/x=5 (note: you have to solve for y first to get y = 5x... x cannot equal 0)


{{{ graph( 500, 500, -10, 10, -10, 10, 0,5x) }}}


Graph of Choice B) y = 5/x, x cannot equal 0


{{{ graph( 500, 500, -10, 10, -10, 10, 0,5/x) }}}


Graph of Choice C) y = 13x^2 ... Note: I'm assuming you meant to say "13 x squared"


{{{ graph( 500, 500, -10, 10, -10, 10, 0,13x^2) }}}



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<font size=4 color="red">B) y=5/x</font> is an inverse variation since it is in the form {{{y = k/x}}} (in this case, k = 5)


More Information: 


<a href="http://www.regentsprep.org/Regents/math/algtrig/ATE7/Inverse%20Variation.htm">http://www.regentsprep.org/Regents/math/algtrig/ATE7/Inverse%20Variation.htm</a>