Question

another question in 4x-4<5(-1x-3)-3 i get x<-14/9 so in interval notation it would be (-infty, -14/9)..... () because it is < and not equal but why do i put infty (-) and why do i put it first?

Answer 1

you are simulating an abbreviated number line

Answer 2

the number line goes from: -inf on the left, all the way to inf on the right

Answer 3

okay buy why is it -infty, what about the equation makes it -, is it just - because 14/9 is or is there another reason?

Answer 4

becasue all x's that can be used are to the left of -14/9 ; inequalities account for an area as opposed to a specific point

Answer 5

so its because x is less than if it where greater than infty would be positive?

Answer 6

yes

Answer 7

the sign is sayng x is on <-- this side of -14/9 :)

Answer 8

not at the moment, srry

Answer 9

k well thanks again