通過畫二次函數(shù)與的圖像可知，這兩個(gè)函數(shù)開口方向________，大小________，對(duì)稱軸________．

拋物線與拋物線的開口方向和大小完全相同，則a=________．

拋物線頂點(diǎn)坐標(biāo)為________，對(duì)稱軸為________．

二次函數(shù)與．它們________相同，________相同，________相同，________相反，它們關(guān)于________對(duì)稱．

已知，若y隨x的增大而減小，則x的取值范圍是________．

根據(jù)二次函數(shù)的圖像，當(dāng)x________時(shí)，y隨x的增大而增大，當(dāng)x________時(shí)，y隨x的增大而減�。�

函數(shù)的開口向________，對(duì)稱軸為直線x=________頂點(diǎn)坐標(biāo)為________．

拋物線的頂點(diǎn)坐標(biāo)為________，對(duì)稱軸為________．

函數(shù)與的圖像關(guān)于________對(duì)稱．

的開口________，它關(guān)于________對(duì)稱，頂點(diǎn)坐標(biāo)為________．

________，它關(guān)于________對(duì)稱，頂點(diǎn)坐標(biāo)為________．