Question 61846
you need to come up with 3 values of x in order to determine the corresponding y values.  First solve the equation for y and we get {{{y=expr(1/3)x-3)}}}.  Substituting 0 for x, we get y=-3; if x=3, then y=-2; if x=9, then y=0.  So there are 3 solutions and the graph is:
{{{graph(200,200,-3,11,-5,5,x/3-3)}}}