二次函數

二次函數

9th Grade

13 Qs

quiz-placeholder

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二次函數

二次函數

Assessment

Quiz

Mathematics

9th Grade

Medium

Created by

chang shengchi

Used 18+ times

FREE Resource

13 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

下列二次函數的圖形,何者開口最大?

y=-x2+2

y=-2x2

y=0.5x2-2

y=x2

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

把y=x2向上平移二單位,可得一新函數為?

y=(x+2)2

y=x2+2

y=2 x2

y=x2-2

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

把y=x2-2向上平移5單位,可得一新的二次函數為?

y=(x+5)2

y=x2+3

y=5 x2

y=x2-7

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

將兩個二次函數y=2 x2+1與y=2 x2-1畫在同一座標平面上,下列有關這兩個函數圖形的敘述,哪一個是錯誤的?

有相同的開口方向

圖形都是拋物線

有相同的頂點座標

有相同的對稱軸。

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

下列有4個二次函數:

y=2x2

y=-2x2

y=- 0.7x2

y=3.2x2

開口向下的有幾個?

4

3

2

1

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

二次函數y=-3 x2的頂點座標為?

(3,0)

(1,0)

(0,1)

(0,0)

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

二次函數y=-3 x2的開口方向為?

向上

向下

向左

向右

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