another question in 4x-4

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?

amistre64 · Answer

you are simulating an abbreviated number line

amistre64 · Answer

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

anonymous · Answer

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

amistre64 · Answer

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

anonymous · Answer

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

amistre64 · Answer

yes

amistre64 · Answer

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

amistre64 · Answer

not at the moment, srry

anonymous · Answer

k well thanks again