Question

How do I Express the inequality x < 7 using interval notation.

Answer 1

Answer:
`(-\infty, 7)`

You can write this as (-infinity, 7) if you aren't able to use the infinity symbol.

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Step-by-step explanation:

Think of x < 7 as writing
`-\infty < x < 7`

So x is between negative infinity and 7, excluding both endpoints.

To write
`-\infty < x < 7` in interval notation, we write
`(-\infty, 7)`

The curved parenthesis tell us to exclude the endpoint.