9-10高一下·浙江宁波·期中
1 . 已知两直线
,当
为何值时,
与
(1)相交;(2)平行;(3)重合?
![](https://img.xkw.com/dksih/QBM/2010/12/30/1569950908203008/1569950913462272/STEM/d5e7d638eed14886ae7323a27ae40eaf.png?resizew=308)
![](https://img.xkw.com/dksih/QBM/2010/12/30/1569950908203008/1569950913462272/STEM/92db315654dd438bae21d35e56c4e1f4.png?resizew=17)
![](https://img.xkw.com/dksih/QBM/2010/12/30/1569950908203008/1569950913462272/STEM/755c8489c89d48a0a8703ef815316565.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2010/12/30/1569950908203008/1569950913462272/STEM/47233381e924446aa4216ac1ed2b9244.png?resizew=15)
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2011·广东广州·高考模拟
2 . 一条光线沿直线
入射到直线
后反射,则反射光线所在的直线方程为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d37de4a3de86448b6811d6c938b9aa2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b4daf4cf77fa1bbd79363c05d601cf2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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8-9高三·湖南岳阳·阶段练习
3 . 函数y=x2-2x在区间[a,b]上的值域是[-1,3],则点(a,b)的轨迹是图中的( )
![](https://img.xkw.com/dksih/QBM/2010/3/1/1569617024909312/1569617088520192/STEM/b3059292f85a4e028045ddb071a95e20.png?resizew=140)
![](https://img.xkw.com/dksih/QBM/2010/3/1/1569617024909312/1569617088520192/STEM/b3059292f85a4e028045ddb071a95e20.png?resizew=140)
A.线段AB和线段AD | B.线段AB和线段CD |
C.线段AD和线段BC | D.线段AC和线段BD |
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