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y)y/千米y/油量2105018045330X3030-312.53x小时 O 12.53x小时(13题图)(14题图)14.如图是二次函数 y=ax^2+bx 的图象.若关于x的一元二次方程 ax^2+bx+m-6=0有实数根,则 m的最大值为b^2=12a 相关知识点: 试题来源: 解析 等号成表示,次出数y=ax+bx与直线y=6-m有交点,[在国象上有交点] 相...