配套习题- 一次函数及其图像性质 -【青果学院】

1/5单选题

难度：

1.下列函数①y=πx，②y=2x-1，③y＝

，④y=2^-1-3x，⑤y=x²-1中，是一次函数的有（　　）

A	4个
B	3个
C	2个
D	1个

正确答案：Qg==

6Kej77ya4pGgeT3PgHjmmK/kuIDmrKHlh73mlbDvvJs8YnI+4pGheT0yeC0x5piv5LiA5qyh5Ye95pWw77ybPGJyPuKRonk9PGltZyB3aWR0aD03IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwL0M3LzlCL3JCQUNFMVdiaVVfeTExcjRBQUFCUXk2aHdrZzQwMi5wbmciPu+8jOiHquWPmOmHj+asoeaVsOS4jeS4ujHvvIzkuI3mmK/kuIDmrKHlh73mlbDvvJs8YnI+4pGjeT0yPHN1cD4tMTwvc3VwPi0zeOaYr+S4gOasoeWHveaVsO+8mzxicj7ikaR5PXg8c3VwPjI8L3N1cD4tMe+8jOiHquWPmOmHj+asoeaVsOS4jeS4ujHvvIzkuI3mmK/kuIDmrKHlh73mlbDvvI48YnI+5pWF6YCJ77yaQu+8jg==

2/5单选题

难度：

2.一次函数y=

x-1的图象大致是（　　）

A
B
C
D

正确答案：Qg==

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

3/5单选题

难度：

3.

已知函数y=（m²+2m）x^m²+m−1 +（2m-3）是x的一次函数，则常数m的值为（　　）

A	-2
B	1
C	-2或-1
D	2或-1

正确答案：Qg==

PHA+6Kej77ya55Sx6aKY5oSP5b6X77yabTxzdXA+Mjwvc3VwPittLTE9MeS4lG08c3VwPjI8L3N1cD4rMm3iiaAw77yMPGJyPuino+W+l++8mm09Me+8jjxicj7mlYXpgInvvJpC77yOPC9wPg==

4/5单选题

难度：

4.一次函数y=ax+b和一次函数y=bx+a图象正确的是（　　）

A
B
C
D

正确答案：Qg==

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

5/5单选题

难度：

5.设0＜k＜2，关于x的一次函数y=kx+2（1-x），当1≤x≤2时的最大值是（　　）

A	2k-2
B	k-1
C	k
D	k+1

正确答案：Qw==

6Kej77ya5Y6f5byP5Y+v5Lul5YyW5Li677yaeT3vvIhrLTLvvIl4KzI8YnI+4oi1MO+8nGvvvJwyPGJyPuKItGstMu+8nDDvvIzliJnlh73mlbDlgLzpmo9455qE5aKe5aSn6ICM5YeP5bCP77yOPGJyPuKItOW9k3g9MeaXtu+8jOWHveaVsOWAvOacgOWkp++8jOacgOWkp+WAvOaYr++8mu+8iGstMu+8iSsyPWs8YnI+5pWF6YCJQ++8jg==