Question 111870



If {{{y}}} varies directly with {{{x}}} with the constant of variation {{{k}}}, then we have:

{{{y = k*x}}}


if {{{y = 2590}}} and {{{x = 700}}}, find the constant of variation {{{k}}}:
 
{{{y = k*x}}}……..divide both sides by {{{x}}}

{{{y/x = k*x/x}}}

{{{y/x = k}}}…or

{{{k = y/x }}}…………..now plug in values for {{{x}}} and {{{y}}}


{{{k = 2590/700}}}………..reduce

{{{k = 259/70}}}

{{{k = 3.7}}}………..