document.write( "Question 311066: Determine whether (2,7) is a solution of 6x+9y=20. Is (2,7) a solution of the equation? Please advise. Find the indicated outputs for f(x) =4x^-4x. f=(0), f=(-1), and f=(2). Thank you. \n" ); document.write( "
Algebra.Com's Answer #222496 by stanbon(75887)\"\" \"About 
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Determine whether (2,7) is a solution of 6x+9y=20. Is (2,7) a solution of the equation? Please advise.
\n" ); document.write( "Substitute x = 2 and y = 7 to see if you get a true statement:
\n" ); document.write( "6*2 + 9*7 = 20
\n" ); document.write( "12 + 63 = 20
\n" ); document.write( "75 = 20
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\n" ); document.write( "Not true; so (2,7) is not a solution of the equation.
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\n" ); document.write( "\n" ); document.write( "Find the indicated outputs for f(x) =4x^2-4x.
\n" ); document.write( "f(0) = 4*0 -4*0 = 0
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\n" ); document.write( "f(-1)= 4(-1)^2 - 4(-1) = 4 +4 = 8
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\n" ); document.write( "f(2)= 4(2^2) -4*2 = 4*4 - 4*2 = 8
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\n" ); document.write( "Thank you.
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "
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