Final answer:
To draw a number line to represent the probability of an event, we can use a line segment from 0 to 1 and place the words 'unlikely', 'likely', 'equally likely', 'impossible', and 'certain' at appropriate positions.
Step-by-step explanation:
To draw a number line to represent the probability of an event, we can use a line segment from 0 to 1. We can label 0 as 'impossible' and 1 as 'certain'. We can then place the words 'likely' and 'unlikely' between 0 and 1 to represent probabilities that are closer to either end. Lastly, we can place 'equally likely' in the middle to represent probabilities that are in the middle of the number line. Here is an example:
------------ [impossible] --- [unlikely] --- [equally likely] --- [likely] --- [certain] ------------