Algebra-1

Based on the provided number line graph, we can see the portion of the number line to the left of -4, represented by an arrow pointing to the left with an closed circle on -4, indicates that all numbers less than -4 are solutions to the inequality, including -4 itself.

First, let's define what an inequality is. An inequality is a mathematical expression used to represent the relationship of inequality between two expressions. Common inequality symbols include less than (<), greater than (>), less than or equal to (≤), and greater than or equal to (≥). The solution to an inequality is the set of values that make the inequality true.

When interpreting a number line, typically a solid dot represents the inclusion of that value (i.e., it is equal to and satisfies the inequality), while an open dot represents the exclusion of that value (i.e., it is not equal to and does not satisfy the inequality). The bolded line represents the region where the inequality holds true.