九下數學領域補考
9th Grade
•10 Qs
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九下數學領域補考
Quiz
•
Mathematics
•
9th Grade
•
Hard
莊博智 莊博智
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
下列四個二次函數的圖形中，哪一個函數圖形的開口最大？甲：y＝－x2 乙：y＝3x2 丙：y＝－2x2 丁：y＝x2
(Ａ)甲
(Ｂ)乙
(Ｃ)丙
(Ｄ)丁。
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
二次函數 y＝（x＋2）2 的圖形，向右平移 3 個單位，可以和下列哪一個二次函數的圖形完全疊合？
(Ａ) y＝（x＋5）2
(Ｂ) y＝（x－1）2
(Ｃ) y＝（x＋1）2
(Ｄ) y＝（x－5）2
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
在坐標平面上，y＝2x2－8 的圖形經由下列哪一種方式移動後，可得到 y＝2（x－5）2＋12 的圖形？
(Ａ)先向左移 5 單位，再向上移 20 單位
(Ｂ)先向右移 5 單位，再向上移 20 單位
(Ｃ)先向下移 5 單位，再向右移 20 單位
(Ｄ)先向上移 5 單位，再向左移 20 單位。
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
下列為四個二次函數的圖形，哪一個函數在 x＝2時有最大值 3？
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
三年甲班男、女生各有 20 人，如圖為三年甲班男、女生身高的盒狀圖。若班上每位同學的身高均不相等，則全班身高的中位數在下列哪一個範圍？
(Ａ) 150～155
(Ｂ) 155～160
(Ｃ) 160～165
(Ｄ) 165～170
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
投擲一顆公正的骰子，出現的點數不小於 5 的機率為何？
(Ａ) 1/3
(Ｂ) 1/6
(Ｃ) 2/3
(Ｄ) 1/2
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
一袋子中有 4 顆球，分別標記號碼 1、2、3、4。已知每顆球被取出的機會相同，若第一次從袋中取出一球後放回，第二次從袋中再取出一球，則第二次取出球的號碼比第一次大的機率為何？
(Ａ) 1/2
(Ｂ)3/4
(Ｃ)2/3
(Ｄ)1/2。
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