Question

What is the inequality notation of this interval and graph?

Answer 1

Step-by-step explanation

Step 1

check every interval

`(-\infty,-7\rbrack`

means all values smaller or equal than -7

in math terms

`x\leq-7`

Step 2

`\lbrack9,\infty)`

it means all numbers greater or equal than 9,in math terms

`x\ge9`

Step 3

finally

`\cup\text{ = or}`

then, the solution is

`x\leq-7\text{ or x}\ge9`

I hope