Find the center (h, k) and radius r of the circle. Graph the circle.x2 + y2 + 8x + 4y - 5 = 0 
A. (h, k) = (4, -2); r = 5
B. (h, k) = (4, 2); r = 5
C. (h, k) = (-4, -2); r = 5
D. (h, k) = (-4, 2); r = 5
Answer: C
Mathematics
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Find the axis of symmetry of the parabola defined by the given quadratic function.f(x) = 6 - (x + 2)2
A. x = -6 B. x = -2 C. x = 2 D. x = 6
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Use the slope and y-intercept to graph the function.g(x) = -3x - 3
A.
B.
C.
D.
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Express the graph shown using interval notation. Also express it as an inequality involving x.
A. (-9, -5] -9 < x ? -5 B. (-9, -5) -9 < x < -5 C. [-9, -5] -9 ? x ? -5 D. [-9, -5) -9 ? x < -5
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Solve.
A.
B.
C.
D. none of these
Mathematics