Flashcard 7 - Quantitative Reasoning Flashcard Set for the DAT

To ensure that the function \(y = \sqrt{x-5}\) is defined, the expression inside the square root, \(x-5\), must be non-negative. Solving \(x-5 \geq 0\) yields \(x \geq 5\). Therefore, the function is defined for all values of \(x\) greater than or equal to \(5\).