document.write( "Question 32119: Find the value of k for which the system of linear equations 2x+5y=3 ; (k+1)x+2(k+2)y=2k will have infinite number of solutions . ( Pls answer . .. Its urget ..........THAnkS
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Algebra.Com's Answer #18634 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
For there to be an infinite number of solutions, the
\n" ); document.write( "equation (k+1)x+2(k+2)y=2k must be a multiple of
\n" ); document.write( "the equation 2x+5y=3
\n" ); document.write( "Let the multiplier by \"a\".
\n" ); document.write( "Then the equation is 2ax+5ay=3a
\n" ); document.write( "Then the following set of equation must be true:
\n" ); document.write( "k+1=2a
\n" ); document.write( "2k=3a
\n" ); document.write( "Then k=3a/2
\n" ); document.write( "Substitute that into k+1=2a to get:
\n" ); document.write( "(3a/2)+1=2a
\n" ); document.write( "(1/2)a=1
\n" ); document.write( "a=2
\n" ); document.write( "If a=2 then 2k=3(2) and k=3
\n" ); document.write( "Try It:
\n" ); document.write( "Substituting for \"k\" you get:
\n" ); document.write( "(3+1)x+2(3+2)y=2(3)
\n" ); document.write( "4x+10y=6
\n" ); document.write( "This is a multiple of the equation 2x+5y=3
\n" ); document.write( "Hope this helps.
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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