- #1

karush

Gold Member

MHB

- 3,269

- 5

given$|y+3|\le 4$

we don't know if y is plus or negative so

$y+3\le 4 \Rightarrow y\le 1$

and

$-(y+3)\le 4$

reverse the inequality

$ y+3 \ge -4$

then isolate y

$y \ge -7$

the interval is

$-7 \le y \le 1$

Last edited: