Question 44 Answer and Explanation _ACT June 2014 Asia Form 65F Math Section

Question 44 Answer and Explanation _ACT June 2014 Asia Form 65F Math Section

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44. A circle in the standard(x, y) coordinate plane has center (8, -2) and radius 9 coordinate units. Which of the following is an equation of the circle?

F. $\left({x-8}\right)^{2}+\left({y+2}\right)^{2}=9$

G. $\left({x+8}\right)^{2}+\left({y-2}\right)^{2}=9$

H. $\left({x+8}\right)^{2}-\left({y-2}\right)^{2}=9$

J. $\left({x+8}\right)^{2}-\left({y-2}\right)^{2}=81$

K. $\left({x-8}\right)^{2}+\left({y+2}\right)^{2}=81$

Answer and Explanation

Your Answer is

Correct Answer is K

Explanation