Final answer:
The inequality -6 < 3 indicates that -6 is less than 3, as confirmed by its position to the left of 3 on a number line.
Step-by-step explanation:
The correct answer to the inequality that compares -6 and 3 using the number line is -6 < 3. This means that -6 is less than 3. So the correct option is a) -6 < 3; The number -6 is to the left of 3 on the number line. . On a number line, numbers increase in value as you move from left to right. Therefore, because -6 is to the left of 3 on the number line, it is considered to be less than 3.