document.write( "Question 414592: Please help me answer this question.
\n" ); document.write( "Determine the constant of proportionality in each of the following direct variations and find the unknown value of the indicated variable.
\n" ); document.write( "a) if y varies directly as x, and y=10 when x=5, find y when x=15.
\n" ); document.write( "b) If y varies directly as x, and y =5 1/4 when x=3, find x when y=20
\n" ); document.write( "c. if the constant of direct variation is 3.75, find x when y=10.
\n" ); document.write( "d) if y varies directly as x and the point (3,5) is on the graph of the equation describing the relation, find the equation of the variation \n" ); document.write( "

Algebra.Com's Answer #290850 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi
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document.write( "a) y = k*x and y=10 when x=5, k = 2   find y when x=15. 
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document.write( "b) y = k*x and y =5 1/4 when x=3,  find x when y=20  
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document.write( "c. if the constant of 'direct variation' is 3.75, find x when y=10. 
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document.write( "d) if y varies directly as x and the point (3,5) is on the graph of the equation describing the relation, find the equation of the variation 
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document.write( "   y = kx
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document.write( "   5 = k*3
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document.write( "   5/3 = k     is the equation of the Direct variation 
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