+0

# Help

0
97
2
+170

Express this collection of points on the number line using interval notation.

Feb 15, 2021

#1
+32815
+2

Includes the points   -4     and  + 3   (solid dots)    but does not include   + 5  (open dot)

( -∞ ,-4[ 3,5)

Feb 15, 2021
#2
+79
+3

This is the collection of all points $x$ that satisfy $x \leq -4$ or $3 \leq x < 5$. These intervals are $(-\infty, -4]$ and $[3, 5)$, so the entire collection of points is $\boxed{(-\infty, -4] \cup [3, 5)}$.

Feb 15, 2021