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若y1=bx和没有交点,则下列a,b的可能取值中,成立的是( ) A.a=1,b...
若y
1=bx和
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没有交点,则下列a,b的可能取值中,成立的是( )
A.a=1,b=1
B.a=-1,b=1
C.a=2,b=2
D.a=-2,b=-2
考点分析:
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