# College Algebra

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Write the equation of the circle in standard form. Find the center, radius, intercepts and graph the circle. x^2+y^2+14x+18y=-81

• College Algebra -

rearrange things a bit:

x^2+14x + y^2+18y = -81
x^2+14x+49 + y^2+18y+81 = -81 + 49 + 81
(x+7)^2 + (y+9)^2 = 49

now the rest is easy.
C'mon back if you get stuck.

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