
九智第一次段考複習
Quiz
•
Mathematics
•
9th Grade
•
Practice Problem
•
Medium
李佩真 李佩真
Used 1+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
甲、乙兩個二次函數分別為y=-(x+3)2+30、y=(x-2)2+30,判斷下列敘述何者正確?
甲有最大值,且其值為x=-3時的y值
甲有最小值,且其值為x=-3時的y值
乙有最大值,且其值為x=-2時的y值
乙有最小值,且其值為x=-2時的y值
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
坐標平面上有一函數y=4x2-2的圖形,其頂點坐標為何?
(0 , -2)
(4 , -2)
(-2 , 0)
(0 , 2)
3.
REORDER QUESTION
1 min • 1 pt
請按開口大小由小到大排列順序
乙:y=-5(x+2)2-5
丁:y=-4(x-1)2+3
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
關於二次函數y=-3(x-2)2+1圖形的敘述,下列何者錯誤?
其圖形的頂點坐標為(2 , 1)
其圖形的開口向下
其圖形的對稱軸為x=-2
其圖形在x=2時有最大的y 值=1
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
將y=4x2的圖形向左平移3單位,可得到下列那一個二次函數的圖形
y=4(x-3)2
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
已知二次函數y=ax2+k,其中a<0、k>0,則下列哪一個選項可能是此二次函數的圖形?
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
小真煮好了25顆湯圓,其中15顆為芝麻湯圓,10顆為花生湯圓。已知小真想從煮好的湯圓中撈一顆,若每顆湯圓被小真撈到的機會相等,則他撈到花生湯圓的機率為何?
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