“微信扫一扫”进入题库练习及模拟考试
以点
A.\({\left( {x + 3} \right)^2} + {\left( {y - 4} \right)^2} = 16\)
B.\({\left( {x + 3} \right)^2} + {\left( {y + 4} \right)^2} = 16\)
C.\({\left( {x + 3} \right)^2} + {\left( {y - 4} \right)^2} = 9\)
D.\({\left( {x + 3} \right)^2} + {\left( {y + 4} \right)^2} = 9\)
参考答案:C