The grid lines in the graph below are one unit apart. What is the equation of the circle plotted in the graph in standard form?
+1224 The center of the circle is at (2, -4) and the radius of the circle is 4. We can write the equation like this and simplify.
\((x-2)^2 + (y+4)^2 = 16\)
\((x^2 - 4x + 4) + (y^2 + 8y + 16) = 16\)
\(x^2 - 4x + y^2 + 8y + 4 = 0\)
