Question 1099952
{{{x^2+y^2-14x+8y+29=0}}}
{{{x^2-14x+y^2+8y=-29}}}
{{{x^2-14x+49+y^2+8y+16=-29+49+16}}}
{{{(x-7)^2+(y+4)^2=36}}}
{{{(x-7)^2+(y+4)^2=6^2}}}
That last equation represents all the points
at a distance of {{{highlight(r=6)}}} units
from the point with
{{{system(x-7=0,y+4=0)}}} <--->{{{system(x=highlight(h=7),y=highlight(k=-4))}}}