直线l过抛物线y2=2px（p＞0）的焦点，且与抛物线交于A、B两点，若线段AB的长是8，AB的中点到y轴的距离是2，则此抛物线方程是_刷题宝

题干

直线l过抛物线y²=2px（p＞0）的焦点，且与抛物线交于A、B两点，若线段AB的长是8，AB的中点到y轴的距离是2，则此抛物线方程是（　　）

A：y²=12x

B：y²=8x

C：y²=6x

D：y²=4x

上一题下一题 0.0难度选择题更新时间:2019-03-10 10:21:01

答案(点此获取答案解析）

B

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