Question

Could someone please show me how to find the interval notation set {xl-1 15 years ago

Answer 1

I would assume you mean

x > -1 and x < 1

Answer 2

There is supposed to be a } on both ends
it is x-1<x<1

Answer 3

Is the original problem the set of all x's such that -1 < x < 1

Answer 4

it is a { then x then a line then-1<x<1

Answer 5

(-1,1) is interval notation

look at the last examples at
http://regentsprep.org/REgents/math/ALGEBRA/AP1/IntervalNot.htm

Answer 6

ok

Answer 7

Thank you