九智第一次段考複習

九智第一次段考複習

9th Grade

10 Qs

quiz-placeholder

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九智第一次段考複習

九智第一次段考複習

Assessment

Quiz

Mathematics

9th Grade

Practice Problem

Medium

Created by

李佩真 李佩真

Used 1+ times

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10 questions

Show all answers

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

甲有最小值,且其值為x=-3時的y

乙有最大值,且其值為x=-2時的y

乙有最小值,且其值為x=-2時的y

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

丁:y=-4(x-1)2+3

乙:y=-5(x+2)2-5

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 =1

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

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yax2k,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?

Media Image
Media Image
Media Image
Media Image

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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