function
Quiz
•
Mathematics
•
9th Grade
•
Practice Problem
•
Medium
怡君 劉
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20 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
1. 下列哪個函數是x的二次函數?
y=4-3x
y=x2-(x+5)2
y=x3+7
y=6-(x+6)2
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
下列各函數圖形中,哪一個有最高點?
y=(2-x)(2+x)
y=x2
y=1+2x2
y=-x
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
下列敘述何者正確?
)y=x2+16的圖形有最高點,其坐標為(0 , 16)
y=-4x2-4的圖形有最低點,其坐標為(0 , -4)
y=2x2+4的圖形是對稱於y軸的線對稱圖形
y=-2x2的圖形是對稱於x軸的線對稱圖形
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
下列有關二次函數y=-4x2圖形的敘述,何者錯誤?
圖形通過(-1 , -4)
圖形的開口向上
圖形不會通過第一象限
圖形的對稱軸是x=0
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
在直角坐標平面上,若將二次函數y=x2+3的圖形向下平移1個單位,則可得下列哪一個二次函數的圖形?
y=x2-1
y=x2-2
y=x2+2
y=x2+1
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
下列哪一個二次函數圖形的開口最大?
y= +23
y= -50
y= +1
y=- -1
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
下列二次函數中,何者圖形開口最小?
y=-0.5x2-4
y=2-x2
y=-3x2-1
y=-2x2
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