function

function

9th Grade

20 Qs

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function

function

Assessment

Quiz

Mathematics

9th Grade

Practice Problem

Medium

Created by

怡君 劉

Used 112+ times

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

1. 下列哪個函數是x的二次函數?

y=4-3x

yx2-(x+5)2

yx3+7

y=6-(x+6)2

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

下列各函數圖形中,哪一個有最高點?

y=(2-x)(2+x)

yx2

y=1+2x2

y=-x

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

下列敘述何者正確?

)yx2+16的圖形有最高點,其坐標為(0 , 16)

y=-4x2-4的圖形有最低點,其坐標為(0 , -4)

y=2x2+4的圖形是對稱於y軸的線對稱圖形

y=-2x2的圖形是對稱於x軸的線對稱圖形

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

下列有關二次函數y=-4x2圖形的敘述,何者錯誤

圖形通過(-1 , -4)

圖形的開口向上

圖形不會通過第一象限

圖形的對稱軸是x=0

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

在直角坐標平面上,若將二次函數yx2+3的圖形向下平移1個單位,則可得下列哪一個二次函數的圖形?

yx2-1

yx2-2

yx2+2

yx2+1

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

下列哪一個二次函數圖形的開口最大?

y= 15x2\frac{1}{5}x^2 +23 

y= 23x2-\frac{2}{3}x^2 -50

y= 3x23x^2 +1

y=- 5x25x^2 -1

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

下列二次函數中,何者圖形開口最小?

y=-0.5x2-4

y=2-x2

y=-3x2-1

y=-2x2

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