中学生网络课堂本课配套习题挑战模式1/5
单选题
难度系数：
1.已知点A（-1，0）在抛物线y=ax2+2上，则此抛物线的解析式为（ ）
| A: y=x2+2 |
| B: y=x2-2 |
| C: y=-x2+2 |
| D: y=-2x2+2 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOWwhueCuUHvvIgtMe+8jDDvvInku6PlhaXop6PmnpDlvI95PWF4PHN1cD4yPC9zdXA+KzLvvIzljbPlj6/msYLlh7ph55qE5YC877yM5LuO6ICM5rGC5Ye65oqb54mp57q/55qE6Kej5p6Q5byPLg==
- 答案：RA==
6Kej77ya5bCG54K5Qe+8iC0x77yMMO+8ieS7o+WFpeino+aekOW8j3k9YXg8c3VwPjI8L3N1cD4rMuW+l++8jDxicj5hKzI9MO+8jDxicj7op6PlvpfvvIxhPS0y77yMPGJyPuaVheWHveaVsOino+aekOW8j+S4unk9LTJ4PHN1cD4yPC9zdXA+KzIuIDxicj7mlYXpgIlELiA=
本课配套习题挑战模式2/5
单选题
难度系数：
2.如图所示，在平面直角坐标系中，二次函数y=ax2+bx+c的图象顶点为A（-2，-2），且过点
B（0，2），则y与x的函数关系式为（ ）
B（0，2），则y与x的函数关系式为（ ）
| A: y=x2+2 |
| B: y=（x-2）2+2 |
| C: y=（x-2）2-2 |
| D: y=（x+2）2-2 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOW3suefpeS6jOasoeWHveaVsOeahOmhtueCueWdkOagh++8jOiuvumhtueCueW8j+avlOi+g+eugOWNlS4=
- 答案：RA==
6Kej77ya6K6+6L+Z5Liq5LqM5qyh5Ye95pWw55qE5YWz57O75byP5Li6eT1h77yIeCsy77yJPHN1cD4yPC9zdXA+LTLvvIzlsIbvvIgw77yMMu+8ieS7o+WFpeW+lzxicj4yPWHvvIgwKzLvvIk8c3VwPjI8L3N1cD4tMjxicj7op6PlvpfvvJphPTE8YnI+5pWF6L+Z5Liq5LqM5qyh5Ye95pWw55qE5YWz57O75byP5piveT3vvIh4KzLvvIk8c3VwPjI8L3N1cD4tMu+8jDxicj7mlYXpgIlELiA=
本课配套习题挑战模式3/5
单选题
难度系数：
3.抛物线y=ax2+bx+c与x轴的两个交点为（-1，0），（3，0），其形状与抛物线y=-2x2相同，则y=ax2+bx+c的函数关系式为（ ）
| A: y=-2x2-x+3 |
| B: y=-2x2+4x+5 |
| C: y=-2x2+4x+8 |
| D: y=-2x2+4x+6 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOaKm+eJqee6v3k9YXg8c3VwPjI8L3N1cD4rYngrY+eahOW9oueKtuS4juaKm+eJqee6v3k9LTJ4PHN1cD4yPC9zdXA+55u45ZCM77yMYT0tMg==
- 提示2：IHk9YXg8c3VwPjI8L3N1cD4rYngrY+S4jnjovbTnmoTkuKTkuKrkuqTngrnkuLrvvIgtMe+8jDDvvInvvIzvvIgz77yMMO+8ie+8jOWIqeeUqOS6pOeCueW8j+axguihqOi+vuW8j+WNs+WPry4=
- 答案：RA==
6Kej77ya5qC55o2u6aKY5oSPYT0tMu+8jDxicj7miYDku6Xorr55PS0y77yIeC14PHN1Yj4xPC9zdWI+77yJ77yIeC14PHN1Yj4yPC9zdWI+77yJ77yMPGJyPuaxguWHuuino+aekOW8j3k9LTLvvIh4KzHvvInvvIh4LTPvvInvvIw8YnI+5Y2z5piveT0tMng8c3VwPjI8L3N1cD4rNHgrNi4gPGJyPuaVhemAiUQuIA==
本课配套习题挑战模式4/5
单选题
难度系数：
4.已知二次函数y=x2+mx+n的图象经过点（2，4），且其顶点在直线y=2x+1上，则它的解析式为（ ）
| A: y=x2-x+2 |
| B: y=x2-2x+3 |
| C: y=x2-2x+5 |
| D: y=x2-2x+4 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOaKiueCue+8iDLvvIw077yJ5Luj5YWl5LqM5qyh5Ye95pWw55qE6KGo6L6+5byP77yM5b6X5Ye6beS4jm7nmoTlhbPns7s=
- 提示2：IOeUqG3vvIxu6KGo56S65Ye65oqb54mp57q/55qE6aG254K55Z2Q5qCH77yM5oqK6aG254K55Z2Q5qCH5Luj5YWl55u057q/6KGo6L6+5byP5b6X5Ye6be+8jG7nmoTlhbPns7vvvIznu4TmiJDmlrnnqIvnu4Top6PliJnlj68=
- 答案：RA==
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
本课配套习题挑战模式5/5
单选题
难度系数：
5.已知抛物线过点A（2，0），B（-1，0），与y轴交于点C，且OC=2. 则这条抛物线的解析式为（ ）
| A: y=x2-x-2 |
| B: y=-x2+x+2 |
| C: y=x2-x-2或y=-x2+x+2 |
| D: y=-x2-x-2或y=x2+x+2 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOmmluWFiOeUsU9DPTLvvIzlj6/nn6VD54K555qE5Z2Q5qCH5piv77yIMO+8jDLvvInmiJbvvIgw77yMLTLvvIk=
- 提示2：IOeEtuWQjuWIhuWIq+aKikHjgIFC44CBQ+S4ieeCueeahOWdkOagh+S7o+WFpeWHveaVsOeahOino+aekOW8j++8jOeUqOW+heWumuezu+aVsOazleaxguWHui4=
- 提示3：IOazqOaEj+acrOmimOacieS4pOenjeaDheWGtS4=
- 答案：Qw==
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
