document.write( "Question 1074921: The graph of a function y+f(x) is vertically expanded by a factor of 2.
\n" ); document.write( "Find the equation of this expanded function in terms of function f(x) \n" ); document.write( "

Algebra.Com's Answer #689708 by KMST(5328) $\"\"$ $\"About$

You can put this solution on YOUR website!
The expanded function $\"y=g%28x%29\"$ is $\"y=g%28x%29=2%2Af%28x%29\"$ .
\n" ); document.write( "for every x, $\"g%28x%29=2%2Af%28x%29\"$ ,
\n" ); document.write( "so the points with $\"f%28x%29%3E0\"$ are twice as high above the x-axis,
\n" ); document.write( "and the points with $\"f%28x%29%3C0\"$ are twice as low below the x-axis.
\n" ); document.write( "The graph has been stretched vertically to twice as long
\n" ); document.write( "(while still firmly nailed at the points on the x-axis, if any). \n" ); document.write( "

\n" );