2下 2-1 函數與函數圖形

Quiz
•
Mathematics
•
8th Grade
•
Medium
康軒數位 康軒數位
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
設y=3(x-2)+1,則下列函數的值何者錯誤?
在x=-2時,函數值為-11
在x=-1時,函數值為-8
在x=0時,函數值為4
在x=4時,函數值為7
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
若函數y=(k2-9)x2+3x+k-3的圖形通過原點,則在x=-2時,函數值y=?
-4
-5
-6
-7
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
常數函數y的圖形通過(-8 , 3),則y的圖形也會通過下列哪一點?
(-8 , 0)
(0 , 3)
(8 , 0)
(0 , -3)
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
設a為已知數,若y=(a-2)x2+(3a+1)x+4為x的一次函數,則在x=1時,函數值y=?
7
11
14
21
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
某行動電話業者所設定的通話費率為:每月基本費88元,基本費可抵300秒的通話費,超過300秒的部分每秒加收0.2元。若本月分阿勇的通話秒數為x秒(x>300),通話費用為y元,則x與y的關係式為下列何者?
y=88+0.2x-300
y=0.2x-300-88
y=88+0.2x
y=88+0.2(x-300)
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
某校段考結束後,由於同學的數學成績不理想,所以老師決定用一次函數來調整分數。只知道芯澄原來40分,調整後為55分;德德原來44分,調整後為61分,那麼珠珠原來56分,調整後的分數為何?
56
65
74
79
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
設a<0、b>0,則函數y=ax+b的圖形不通過哪一象限?
一
二
三
四
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