Does the solution set in the given graph lie to the left or right of the endpoint? What does the closed circle indicate?
x ≤ 4.5
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 4.5 is included in the solution set. Next, we observe that the solution set lies to the left of the endpoint. Using x to represent the solution set, we can say that any value of x is less than or equal to 4.5.
x ≤ 4.5
