document.write( "Question 135693: if f(4)=0 and f(6)=6, which of the following could represent f(x)?\r
\n" ); document.write( "\n" ); document.write( "A. 2/3x-4
\n" ); document.write( "B. x+2
\n" ); document.write( "c. x-4
\n" ); document.write( "D. 3x-12\r
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\n" ); document.write( "\n" ); document.write( "could u show me how to work this out and find the answer?
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Algebra.Com's Answer #99436 by vleith(2983)\"\" \"About 
You can put this solution on YOUR website!
To work this problem, substitute the given values for x into each of the 4 possible answers. Then pick the one(s) that work.\r
\n" ); document.write( "\n" ); document.write( "Given: \"f%284%29=0+and+f%286%29=6\"\r
\n" ); document.write( "\n" ); document.write( "2/3x-4
\n" ); document.write( "\"f%286%29+=+%282%2F3%29+6+-+4\" = \"4+-4\" = 0 != 6. A is out\r
\n" ); document.write( "\n" ); document.write( "x+2
\n" ); document.write( "\"f%284%29+=+4+%2B+2\" = \"6\" != 0 . B is out\r
\n" ); document.write( "\n" ); document.write( "x-4
\n" ); document.write( "\"f%284%29+=+4+-4+\" = 0. so far so good. \"f%286%29+=+6-4\" = \"2\" != 6. C is out\r
\n" ); document.write( "\n" ); document.write( "3x-12
\n" ); document.write( "\"f%284%29+=+3%2A4+-+12+\" = \"0\". so far so good. \"f%286%29=+3%2A6+-+12%29\" = \"18-12\" = \"6\". D works
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