當二次函數Y=ax2 開口方向向下時,其a值為正還是負?
二次函數複習(頂點開口最大最小值)

Quiz
•
Mathematics
•
9th Grade
•
Medium
胡淑雅 胡淑雅
Used 12+ times
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
零
正
負
小數
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
二次函數的頂點座標是(x,y),則x值代表什麼?
頂點的半徑
頂點的斜率
頂點的縱座標
頂點的橫座標
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
二次函數的頂點座標是(x,y),則y值代表什麼?
頂點的座標軸
頂點的z座標
頂點的x座標
頂點的y座標
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
試比較下列二次函數圖形的開口方向與開口大小,下列哪些正確?(兩個答案)
(A)y=3x2 (B) y=-6x2 (C) y=2x2 (D) y=-x
B、C開口向下, A、D開口向上
開口由大排到小為BACD
開口由大排到小為DCAB
A、C開口向上, B、D開口向下
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
試求二次函數y=2x2+1圖形的頂點坐標為何?
(2 , 1)
(2 , 0)
(0 , 2)
(0 , 1)
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列各函數圖形中,何者有最低點?
y=5-x2
y=5x2
y=-5x2
y=-2/5X2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
將y=4x2 的圖形平移向上平移10個單位,會得到哪個二次函數的圖形?
y=4x2-10
y=4x2+5
y=4x2+10
y=4x2-5
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