Final answer:
The number line represents the inequality x ≤ 4.5.
Step-by-step explanation:
The number line represents the inequality x ≤ 4.5.
To determine the inequality represented by a number line, we look at the endpoints. In this case, the number line is bounded by 1.5 on the left and 4.5 on the right. Since the line is solid (not dashed), we include the endpoints in the solution. Therefore, the inequality is x ≤ 4.5.