document.write( "Question 225934: Determine if f(x) = (3x + 2) / 5 is one-to-one. If so, find its inverse. \n" ); document.write( "
Algebra.Com's Answer #168387 by nerdybill(7384)\"\" \"About 
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Determine if f(x) = (3x + 2) / 5 is one-to-one. If so, find its inverse.
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\n" ); document.write( "Since f(x) = (3x + 2) / 5 is a line -- it is one-to-one.
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\n" ); document.write( "y = (3x + 2) / 5
\n" ); document.write( "Flip x and y:
\n" ); document.write( "x = (3y + 2) / 5
\n" ); document.write( "Solve for y:
\n" ); document.write( "x = (3y + 2) / 5
\n" ); document.write( "5x = 3y + 2
\n" ); document.write( "5x-2 = 3y
\n" ); document.write( "(5x-2)/3 = y
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\n" ); document.write( "Therefore the \"inverse\" of
\n" ); document.write( "f(x) = (3x + 2) / 5
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\n" ); document.write( "f^-1(x) = (5x-2)/3
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