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已知一次函数的图象过点(3,5)与(-4,-9),则该函数的图象与x轴交点的坐标...
已知一次函数的图象过点(3,5)与(-4,-9),则该函数的图象与x轴交点的坐标为 .
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,则分式
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如图,已知二次函数y=ax
2+bx+c的图象与x轴交于(x
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2<2,与y轴交于点(0,2).下列结论:①a>0,②b
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A.4
B.3
C.2
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已知AC⊥BC于C,BC=a,CA=b,AB=c,下列选项中⊙O的半径为
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B.
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C.
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D.
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如图,AB是⊙O的直径,∠D=35°,则∠BOC的度数为( )
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A.120°
B.70°
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如图,点A的坐标为(-2,0),点B在直线y=x上运动,当线段AB最短时,点B的坐标为( )
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A.(
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)
C.(0,0)
D.(-1,-1)
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