二次函数y=ax^2+k的图像与性质(12)

(1)已知二次函数y=3x2+4,点A(x1,y1), B(x2,y2),

C(x3,y3), D(x4,y4)在其图象上,且x2< x4<0,0<x3< x1, |x2|>|x1|, |x3|>|x4|, 则 A.y1>y2>y3>y4 B.y2>y1>y3>y4 C.y3>y2>y4>y1 (B )

y2y1 y3 y4 x2 x4 x3 x1

D.y4>y2>y3>y1