document.write( "Question 288727: I think this is the best place to put this problem- in the book it's under \"Variation and Applications\" but I see nothing like that listed. So here goes.
\n" ); document.write( "Instructions given: Write an equation that represents the relationship between the given variables. Use k as the variation constant.
\n" ); document.write( "Problem: C varies directly as r, and C=94.2 when r=15.
\n" ); document.write( "I'd show my work, but that's the problem. I don't have any work to show. I don't understand what needs to happen here and I can't find a lesson on this. Could anyone please explain this for me??? Thanks for any help offered, I really do appreciate it! \n" ); document.write( "

Algebra.Com's Answer #209234 by texttutoring(324) $\"\"$ $\"About$

You can put this solution on YOUR website!
Recall that the equation of a line is y=mx+b, where m is the slope and b is the y-intercept.\r
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\n" ); document.write( "\n" ); document.write( "'Varies directly' just means that the slope is constant, and the y-intercept is zero.\r
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\n" ); document.write( "\n" ); document.write( "The variation constant is just another word for the slope.\r
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\n" ); document.write( "\n" ); document.write( "C=kr
\n" ); document.write( "94.2=k*15
\n" ); document.write( "k=6.28\r
\n" ); document.write( "\n" ); document.write( "Your equation is:\r
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\n" ); document.write( "\n" ); document.write( "C=6.28r \n" ); document.write( "

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