九下二次函數
Quiz
•
Mathematics
•
9th Grade
•
Practice Problem
•
Medium
范雪凌 范雪凌
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列二次函數的圖形,何者開口最大?
y=-x2+2
y=-2x2
y=0.5x2-2
y=x2
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
二次函數y=-3 x2的頂點座標為?
(3,0)
(1,0)
(0,1)
(0,0)
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列何者可能為二次函數y=-2x2-1的圖形?
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
把y=x2向上平移二單位,可得一新函數為?
y=(x+2)2
y=x2+2
y=2 x2
y=x2-2
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪一個二次函數圖形的對稱軸為 x=-2?
y=(x+2)2+4
y=-(x-2)2+1
y=x2-2
y=3(x-2)2
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
坐標平面上有 y=2x2 及 y=2(x-3)2 兩個二次函數的圖形,則下列敘述何者正確?
開口大小一樣
對稱軸一樣
頂點一樣
開口方向不一樣
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
將兩個二次函數y=2 x2+1與y=2 x2-1畫在同一座標平面上,下列有關這兩個函數圖形的敘述,哪一個是錯誤的?
有相同的開口方向
圖形都是拋物線
有相同的頂點座標
有相同的對稱軸。
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