Question

math problrm @az

Answer 1

@AZ

Answer 2

so we look at the graph from left to right

do you see the areas where the graph goes down?
that's when the graph is decreasing

so what are the x-values when the graph is decreasing

Answer 3

2?

Answer 4

@AZ

Answer 5

we need a range of the x-values

so from 2 until like infinity, right?

Answer 6

yep

Answer 7

hats next?

Answer 8

how would you write that in interval notation?

remember, infinity would have to end with )

also, there is one more area where the graph is decreasing

Answer 9

[2, infinity)

Answer 10

Good

and do you think it's decreasing or increasing from -infinity to 0

and is it increasing or decreasing from 0 to 2

Answer 11

from 0 to 2 its increasing

Answer 12

its increasing?

Answer 13

yes, what about negative infinity to 0

is it decreasing then?

Answer 14

its increasing?

Answer 15

look at it from left to right

don't get confused by the arrow pointing up

if you move from left to right, does that line increase or decrease?

Answer 16

decrease

Answer 17

good, so how would you write that in interval notation?

Answer 18

[0, -infinity)

Answer 19

not quite, remember we would write it from the smaller, more negative number so it would be

(-infinity, 0]

Answer 20

az?

Answer 21

type uicker az!!!!!!!! lol

Answer 22

and I'm not sure what software you use to submit your answer but since we have two intervals, you would have to add U

\[(-\infty, 0] ~\cup~[2, \infty)\]

Answer 23

do i have to flip it?

Answer 24

i put 2, infinity first

Answer 25

yeah, we want to go from left to right with the numbers

Answer 26

no, remember the negative infinity should have (
and positive infinity should have )

so you got those switched

Answer 27

az?

Answer 28

you got it

Answer 29

az?

Answer 30

shon belo is decreasing?

Answer 31

hmm maybe make it both ( and )

and not have the [ ]

Answer 32

yep it orked!!!!!!!!!!!!!!!!!1

Answer 33

ah, there we go

so we should just use ( and ) because those points are the other end of the function when it's increasing