
九下-二次函數+資料分析(習作)
Quiz
•
Mathematics
•
9th Grade
•
Hard
蔡佩旻 蔡佩旻
Used 1+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
1 min • 1 pt
判斷下列各式中,y是否為x的二次函數?
y=πx2
y=52-x
y=3x-8
y= (x-5)2
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
比較下列各二次函數圖形開口的大小關係。(以代號填寫)
甲:y=-3x2
乙:y=-1/3 x2
丙:y=-2/3 x2
丁:y=-2x2
丙<乙<甲<丁
丙<丁<甲<乙
甲<丁<丙<乙
甲<乙<丙<丁
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
將二次函數y=-1/2 (x-1)2-5的圖形向右平移3單位,再向下平移7單位,
可得到二次函數的圖形為下列何者?
-1/2 (x+3)2-7
-1/2 (x-4)2-12
-1/2 (x-3)2+7
1/2 (x-3)2+7
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
將二次函數y=2(x-5)2+3的圖形向?(填左或右)平移?單位,再向?(填上或下)平移?
單位, 可得到y=2(x+2)2-1的圖形。
左,7,下,4
右,7,上,4
左,3,下,2
右,3,上,2
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
二次函數y=2(x-4)2+5圖形的頂點,並判斷在x為多少時,y有最大值或最小值,其值為多少?
頂點(4,5)。x=4,有最小值5
頂點(4,5)。x=4,有最大值5
頂點(5,4)。x=5,有最小值4
頂點(5,4)。x=5,有最大值4
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
二次函數y=-(x-3)2+9圖形的頂點,並判斷在x為多少時,y有最大值或最小值,其值為多少?
頂點(9,3),x=9,有最大值3
頂點(3,9),x=3,有最小值9
頂點(3,9),x=3,有最大值9
頂點(9,3),x=9,有最小值3
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
有一個二次函數,其圖形的頂點為(0 , -4),且通過(-3 , -1),求此二次函數。
y= -3x2+4
y= 3 x2-4
y=-1/3 x2-4
y= 1/3 x2-4
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