document.write( "Question 4126: Given the following equation: - 4x + 5y = 20, rewrite in functional notation, then determine the value of f(-2). \n" ); document.write( "

Algebra.Com's Answer #1813 by ivankst(3) $\"\"$ $\"About$

You can put this solution on YOUR website!
First let's write this in functional notation.
\n" ); document.write( " $\"-4%2Ax%2B5%2Ay=20\"$
\n" ); document.write( " $\"5%2Ay=4%2Ax%2B20\"$
\n" ); document.write( " $\"y=%284%2F5%29%2Ax%2B4\"$
\n" ); document.write( "f(-2) = $\"%284%2F5%29%2A%28-2%29%2B4+=+-%288%2F5%29%2B4+=+%28-8%2B20%29%2F5+=+12%2F5+\"$
\n" ); document.write( " \n" ); document.write( "

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