Question

Express the graphed inequality in interval notation:012345678910-1-2-3-4-5-6-7-8-9-10x∈ (Enter your answer in INTERVAL notation, using U to indicate a union of intervals; or enter DNE if no solution exists; use "oo" to express ∞ )

Answer 1

We have a filled circle in -5 so we will use [ because we touch the -5 and an unfilled circle in 2 therefore we will use ) because we did not touch the 2, therefore, our interval will be

`-5\le\: x<\: 2`

In interval notation

`\: \lbrack-5,\: 2)`