问题 问答题

Which of the following inequalities is an algebraic expression for the shaded part of the number line above ?

答案

参考答案:

|x+1|≤4

解析:

上面数轴中的阴影部分可用不等式表达为:

-5≤x≤3

→-5+1≤x+1≤3+1

→-4≤x+1≤4

→|x+1|≤4

单项选择题
单项选择题