Is the solution set on the left or the right of the endpoint? What does the open circle tell us?
I
Practice makes perfect
Before we can write an inequality for the given graph, we need to take note of the endpoint and the direction of the inequality.
First, we see that the circle at the endpoint is closed. This means that the inequality is non-strict and 3 is included in the solution set. Next, we observe that the solution set lies to the left of the dot. Using x to represent the solution set, we can say that any value of x is less than or equal to 3.
x ≤ 3
This corresponds to option I.
