Question 756770
I am having trouble attempting to solve this question. Graph the circle x^2+y^2-4x+2y-4=0.
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It's not a question, it's an equation.
Graphing it is not solving it.
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Graph the circle x^2+y^2-4x+2y-4=0
{{{x^2 + 4x + y^2 + 2y = 4}}}
Complete the squares for x and y
{{{x^2 + 4x + 4 + y^2 + 2y + 1 = 9}}}
{{{(x+2)^2 + (y + 1)^2 = 3^2}}}
The center is (-2,-1)
The radius = 3