Question 244417
y2-12y+36=0
(y-6)(y-6)=0
y=6


Since this seems to be a two-dimensional problem, in an xy coordinate system, you have a HORIZONTAL line that is 6 units above the x axis.

It looks like this;
{{{graph(300,300,-10,10,-10,10,6 ) }}}


Dr. Robert J. Rapalje, Retired
Seminole State College of Florida