document.write( "Question 658563: Determine whether 2x+4y=15 defines y as a function of x. \n" ); document.write( "
Algebra.Com's Answer #410329 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!
\"2x%2B4y=15\"..first solve it for \"y\"\r
\n" ); document.write( "\n" ); document.write( "\"4y=-2x%2B15\"\r
\n" ); document.write( "\n" ); document.write( "\"y=-%282%2F4%29x%2B15%2F4\"\r
\n" ); document.write( "\n" ); document.write( "\"y=-%281%2F2%29x%2B3.75\"\r
\n" ); document.write( "\n" ); document.write( "There is nothing except a \"y\" on one side and there isn't a \"y\" on the other, so it \"is\" a \"function\".\r
\n" ); document.write( "\n" ); document.write( "\"+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+-%281%2F2%29x%2B3.75%29+\"\r
\n" ); document.write( "\n" ); document.write( "as you can see, it is a line, continuous, and for each \"x\" there is unique \"y\"
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