Question 415814
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Hi
Standard Form of an Equation of a Circle is {{{(x-h)^2 + (y-k)^2 = r^2}}}
where Pt(h,k) is the center and r is the radius
cirlce (x+4)^2+y^2=100    |c(-4,0) and r = 10
{{{drawing(300,300,   -15,15,-15,15,  grid(1),
circle(-4, 0,0.4),
circle(-4, 0,10),
graph( 300, 300, -15,15,-15,15 ))}}}