Question 147104
Plot all points that are 3 units from the x axis. Describe the configuration. Then, plot all the points 3 units from (5,4) and describe their configuration. 
----------
3 units from the x-axis would be the lines x = 3 and x = -3.
3 units from a point is a circle of radius 3 about that point. In this case,
{{{(x-5)^2 + (y-4)^2 = 3^2}}}