The equation of circle A is x2 + y2 + Cx + Dy + E = 0. If the circle is moved horizontally to the left of the y-axis without changing the radius, how are the coefficients C and D affected?

C and D are unchanged.

C becomes positive, and D is unchanged.

C becomes negative, and D is unchanged.

C becomes negative, and D becomes positive.

Question

Elizabeth Oneill

Advanced Placement (AP)

5 November, 04:00

The equation of circle A is x2 + y2 + Cx + Dy + E = 0. If the circle is moved horizontally to the left of the y-axis without changing the radius, how are the coefficients C and D affected?

C and D are unchanged.

C becomes positive, and D is unchanged.

C becomes negative, and D is unchanged.

C becomes negative, and D becomes positive.

+2

Answers (1)

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Rodolfo Gilbert · Answer 1

I thing the most suitable is third option C becomes negative, and D is unchanged. You can check it by using special services to build graph and move it to the left and then check if I'm wrong.