From the image, it looks like you're working on expressing a graphed inequality in interval notation. The number line shows a blue dot at 2 with an arrow pointing to the left, indicating all numbers less than or equal to 2.

The interval notation for this graph would be:

$(-\infty, 2]$

The round bracket "(" means that negative infinity is not included, and the square bracket "]" means that 2 is included.

It seems like you entered something close to this in your answer box, but ensure you're using proper syntax: (-∞, 2].

Would you like further details or have any questions?

Here are 5 related questions:

1. How do you interpret different types of brackets in interval notation?
2. What does the arrow on the number line represent in inequalities?
3. How do you write an inequality for the same graph using algebraic notation?
4. How would the interval notation change if the dot at 2 were open instead of closed?
5. What is the difference between inequalities with infinity and those without it?

Tip: Always use a square bracket for included endpoints (closed dots) and round brackets for excluded ones (open dots or infinity).