Write interval notation.
-
B)(-5, -1)
C)[-5, -1)
D)[-5, -1]

Question

Write interval notation.
-
B)(-5, -1) 
C)[-5, -1) 
D)[-5, -1]

Quizplus · Accepted Answer

Interval notation is written with square brackets when the endpoints are included and with parentheses when the endpoints are not included. In this case, the interval goes from -5 to -1 and since both endpoints are listed, we use square brackets to indicate that they are included. However, we cannot use parentheses for the right endpoint because this notation is reserved for an open interval (excluding the endpoint), which is not the case here. Therefore, the correct interval notation is [-5, -1].

Write Interval Notation. -