Question 963873
With the center at {{{x=-4}}}, the distance to {{{x=4}}} is {{{4-(-4)=8}}}.
So the radius of the circle is {{{8}}}.
So then the distance from the y-center to the line {{{y=4}}} is the same distance.
{{{4-y[c]=8}}}
{{{y[c]=-4}}}
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(-4,-4)
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{{{drawing(300,300,-7,7,-7,7,grid(1),circle(-4,-4,8),circle(-4,-4,0.2),blue(line(-10,4,10,4)),blue(line(4,-10,4,10)))}}}