配套习题- 二次函数的图像与性质 -【青果学院】

1/5单选题

难度：

1.二次函数y=x²的图象的开口方向是（　　）

A	向上
B	向下
C	向左
D	向右

正确答案：QQ==

6Kej77ya4oi15LqM5qyh5Ye95pWweT14PHN1cD4yPC9zdXA+55qE5LqM5qyh6aG557O75pWwYT0x77yeMO+8jDxicj7iiLTmipvniannur/lvIDlj6PlkJHkuIrvvI48YnI+5pWF6YCJQe+8jg==

2/5单选题

难度：

2.二次函数y＝

x²的图象的顶点坐标是（　　）

A	（1，0）
B	（0，0）
C	（-1，0）
D	（0，）

正确答案：Qg==

6Kej77ya4oi15LqM5qyh5Ye95pWweT08aW1nIHdpZHRoPTcgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvODAvMDYvckJBQ0oxVnhTQ1dnazlFZkFBQUJKSHY5VGJBMzUwLnBuZyI+eDxzdXA+Mjwvc3VwPu+8jDxicj7iiLTkuozmrKHlh73mlbB5PTxpbWcgd2lkdGg9NyBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC84MC8wNi9yQkFDSjFWeFNDV2drOUVmQUFBQkpIdjlUYkEzNTAucG5nIj54PHN1cD4yPC9zdXA+5Zu+6LGh55qE6aG254K55Z2Q5qCH5piv77ya77yIMO+8jDDvvInvvI48YnI+5pWF6YCJQu+8jg==

3/5单选题

难度：

3.若二次函数y=2x²的图象经过点P（1，a），则a的值为（　　）

A
B	1
C	2
D	4

正确答案：Qw==

6Kej77ya5oqKUO+8iDHvvIxh77yJ5Luj5YWleT0yeDxzdXA+Mjwvc3VwPuW+l2E9MsOXMT0y77yOPGJyPuaVhemAiUPvvI4=

4/5单选题

难度：

4.当ab＞0时，y=ax²与y=ax+b的图象大致是（　　）

A
B
C
D

正确答案：RA==

6Kej77ya5qC55o2u6aKY5oSP77yMYWLvvJ4w77yM5Y2zYeOAgWLlkIzlj7fvvIw8YnI+5b2TYe+8njDml7bvvIxi77yeMO+8jHk9YXg8c3VwPjI8L3N1cD7kuI7lvIDlj6PlkJHkuIrvvIzov4fljp/ngrnvvIx5PWF4K2Lov4fkuIDjgIHkuozjgIHkuInosaHpmZDvvJs8YnI+5q2k5pe277yM5rKh5pyJ6YCJ6aG556ym5ZCI77yMPGJyPuW9k2HvvJww5pe277yMYu+8nDDvvIx5PWF4PHN1cD4yPC9zdXA+5LiO5byA5Y+j5ZCR5LiL77yM6L+H5Y6f54K577yMeT1heCti6L+H5LqM44CB5LiJ44CB5Zub6LGh6ZmQ77ybPGJyPuatpOaXtu+8jETpgInpobnnrKblkIjvvIw8YnI+5pWF6YCJRO+8jg==

5/5单选题

难度：

5.

若函数y=ax^a²−2 是二次函数且图象开口向上，则a=（　　）

A	-2
B	2
C	2或-2
D	1

正确答案：Qg==

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