FTCE General Knowledge Math Practice Test 2025 – Complete Exam Prep

When an inequality is expressed as "x is greater than or equal to a number," it indicates that the solution includes all values of x that are equal to that number or any value greater than it. In terms of graphing, this is represented using a vertical line on a coordinate plane.

A vertical line indicates that for all points along that line, the x-values are constant, while the y-values can take on any value. Since the inequality includes "greater than or equal to," the vertical line is often drawn as a solid line, highlighting that the point corresponding to the number is included in the solution set. The shading extends to the right of that line to represent all values greater than the specified number.

This context clarifies why the selected answer, which describes a horizontal line, is not appropriate in this case. A horizontal line would indicate a situation where the y-value is constant and the x-value can vary, which does not correspond to the inequality in question.