document.write( "Question 453910: The variables x and y vary directly. When x is 5, y is 15. If x is 25, what is y?\r
\n" ); document.write( "\n" ); document.write( "a. 1/3
\n" ); document.write( "b. 3
\n" ); document.write( "c. 25/3
\n" ); document.write( "c. 75
\n" ); document.write( "

Algebra.Com's Answer #311765 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
The variables x and y vary directly.
\n" ); document.write( "y = kx
\n" ); document.write( "---
\n" ); document.write( "Solve for \"k\" using \"When x is 5, y is 15\".
\n" ); document.write( "----
\n" ); document.write( "15 = k*5
\n" ); document.write( "k = 3
\n" ); document.write( "---
\n" ); document.write( "Equation:
\n" ); document.write( "y = 3x
\n" ); document.write( "-----
\n" ); document.write( "Solve: If x is 25, what is y?
\n" ); document.write( "y = 3*25
\n" ); document.write( "y = 75
\n" ); document.write( "==================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "============
\n" ); document.write( "a. 1/3
\n" ); document.write( "b. 3
\n" ); document.write( "c. 25/3
\n" ); document.write( "c. 75
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