Question

Matching Inequality and Interval NotationCheckMatch the solution set given in inequality notation with the solution set given in interval notation.X<78(-0,7.8)X> 7.8(7.8,00)X278(-0, 7.8]X$ 787.8,00)IntroDone

Answer 1

Rules:

The "(" sign in the interval corresponds to the ">" sign.

The ")" sign in the interval corresponds to the "<" sign.

The "[" sign in the interval corresponds to the ">=" sign.

The "]" sign in the interval corresponds to the "<=" sign.

When the infinity value is present in the interval, the signs used are "(" or ")" because the infinity value can never be included in the interval.

For this example we have:

x<7.8 corresponds to (-infinity, 7.8)

x>7.8 corresponds to (7.8, infinity)

x>=7.8 corresponds to [7.8, infinity)

x<=7.8 corresponds to (-infinity, 7.8]