Question 206432
{{{ graph(300,300,-1,10,-1,10,sqrt(x),sqrt(x) + 4) }}}

The parent function {{{ sqrt(x) }}} is in red and  {{{ sqrt(x)+4 }}}
is in green.  To get  {{{ sqrt(x) }}}, just plot a few points like (0,0), (1,1), (4,2), (9,3), (16,4) ...

To get {{{ sqrt(x)+4 }}}, the parent function is just moved up 4.

   -  Mick