Question 69837
<pre><font size = 4><b>Rewrite the equation 4x – 6y = –30 as a function of x. 
0 solutions

Just solve for y, then replace " y " by " f(x) ".
That's all there is to it:

   {{{4x - 6y = -30}}}
    {{{-6y = -30 - 4x}}}
Divide thru every term by -6
   {{{ (-6y)/(-6) = (-30)/(-6) - (4x)/(-6) }}}      
      {{{ y = 5 + (4x)/6 }}}
      {{{ y = 5 + (2x)/3 }}} 

Now replace y by f(x)

     {{{ f(x) = 5 + (2x)/3 }}} 

Edwin</pre>