document.write( "Question 126983This question is from textbook Pre-Algebra
\n" ); document.write( ": write this in function form: 3x+4y=0 \n" ); document.write( "

Algebra.Com's Answer #93002 by MathLover1(20849) $\"\"$ $\"About$

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Write, in function form:
\n" ); document.write( " $\"+3x%2B4y=0\"$ \r
\n" ); document.write( "\n" ); document.write( "First, you need to identify which of the two variables is the \" $\"independent\"$ \" variable. Usually, x is the independent variable, so we'll first write the equation in terms of $\"x\"$ , which means that we'll need to solve for $\"y\"$ .\r
\n" ); document.write( "\n" ); document.write( " $\"+3x%2B4y=0\"$ ЕЕЕ. add $\"-3x\"$ to both sides
\n" ); document.write( " $\"3x+%963x%2B4y+=0+-3x\"$
\n" ); document.write( " $\"+4y+=-3x+\"$ ЕЕЕ..Divide both sides by $\"4\"$
\n" ); document.write( " $\"4y%2F4+=-3x%2F4+\"$
\n" ); document.write( " $\"y+=-%283%2F4%29x+\"$ \r
\n" ); document.write( "\n" ); document.write( "Now, to write this in $\"function+form\"$ , we replace the $\"y\"$ with $\"f%28x%29\"$ , which is read as $\"f\"$ of $\"x\"$ or function of $\"x\"$ . When an equation is written in $\"function\"$ form, it is easy to identify the $\"independent\"$ variable.
\n" ); document.write( "That's the variable inside the parentheses of the $\"f%28x%29\"$ or $\"x\"$ .\r
\n" ); document.write( "\n" ); document.write( " $\"f%28x%29+=+-%283%2F4%29x+\"$ \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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