Question

line segment ab measures 18 units. what is d, the distance between tick marks on the number line? 1 unit 2 units 3 units 9 units

Explanation:

Step1: Count tick - mark intervals

There are 9 intervals between A and B.

Step2: Divide length of AB by intervals

Since $AB = 18$ units and there are 9 intervals, we calculate $d=\frac{18}{9}$.

Answer:

C. 2 units