A square root function contains a square root involving a variable and there are some restrictions to the variable under the square root. The radicand must always be positive or equal to zero, which means that the domain of the square root function is restricted to values that make the radicand non-negative. The graph of a square root function is half of a parabola and you'll learn how to graph it in this lecture. Graphing square root inequalities is closely related to graphing the square root functions. We use the same techniques that were used to graph linear and quadratic inequalities, but with an extra step that you'll see in the video.
*These practice questions are only helpful when you work on them offline on a piece of paper and then use the solution steps function to check your answer.
Square Root Functions and Inequalities
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.