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已知二次函数y=ax2+bx+c的图象过点A(1,2),B(3,2),C(5,7...
已知二次函数y=ax2+bx+c的图象过点A(1,2),B(3,2),C(5,7).若点M(-2,y1),N(-1,y2),K(8,y3)也在二次函数y=ax2+bx+c的图象上,则下列结论正确的是( )
A.y1<y2<y3
B.y2<y1<y3
C.y3<y1<y2
D.y1<y3<y2
考点分析:
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