Graph and write interval notation.
-$- 1 \leq x \leq 3$

A) $( - 1,3 )$
B) $( - 1,3 ]$
C) $[ - 1,3 ]$
D) $[ - 1,3 )$

Question

Graph and write interval notation.
-$- 1 \leq x \leq 3$

A) $( - 1,3 )$ 
B) $( - 1,3 ]$ 
C) $[ - 1,3 ]$ 
D) $[ - 1,3 )$

Quizplus · Accepted Answer

The inequality includes the endpoints -1 and 3, so we use square brackets to indicate that they are included in the interval. Therefore, the correct interval notation is [-1,3]. Choice A is incorrect because it uses parentheses, which indicate that the endpoints are not included in the interval. Choice B is incorrect because it only includes the endpoint 3 and not -1. Choice D is incorrect because it does not include the endpoint 3.

Graph and Write Interval Notation −1≤x≤3- 1 \leq x \leq 3−1≤x≤3

Graph and Write Interval Notation $- 1 \leq x \leq 3$