Question

does anyone here knows how to Write each interval as an inequality?

Answer 1

i do

Answer 2

yep

Answer 3

Okay cause my teacher doesn't explain anything-.-

Answer 4

(-1, 10]

Answer 5

if it's (a,b) -> a<x<b

it its [a,b] -> a<=x<b

just apply that logic

Answer 6

-1<x<=10

Answer 7

do you need to graph it to

Answer 8

yes i do!

Answer 9

sorry, I meant it its [a,b] -> a<=x<=b

Answer 10

what if there is ( & ]

Answer 11

like; [25, 50)

Answer 12

(a,b] -> a<x<=b

[a,b) -> a<=x<b

Answer 13

[25, 50)

25 <=x<50

Answer 14

if its a negative you need to change the sign

Answer 15

does it say interval notation or set builder

Answer 16

okay thank you!
and what about like the 8 that is turned around. the infinity sign.

Answer 17

\[[3, \infty)\]

Answer 18

same rules apply. however, it can NEVER be

\[(a,\infty]\]

meaning there can NEVER be a ] next to the infinity sign

Answer 19

can you do this one, so i can have an example? :)

Answer 20

Actually, I was mistaken. Same rules do not apply, sorry.

that would mean:

\[x \ge 3\]

Answer 21

okay so it's x > 3 ?

Answer 22

\[\ge\] *

Answer 23

Nope, greater than or equal to three. Yes

Answer 24

thank you!! :))

Answer 25

and \[(\infty, b]\]

means

\[x \le b\]

Answer 26

okay! thanks!! <3

Answer 27

Pleasure :)