Brian McLogan
Determine the domain and range for the square root function
👉 Learn how to find the domain of a radical function. Recall that the domain of a function is the set of possible input values (x-values) of the function. For a radical square-root function, there cannot be a negative number inside the...
Khan Academy
Khan Academy: Algebra: Graphing Radical Functions
Video showing how to graph a radical function by specifically choosing values for x that result in easy-to-plot values of y and then plotting the points. [10:17]
Khan Academy
Khan Academy: Algebra: Graphs of Square Root Functions
Video giving an overview of the square root sign. Positive values are then chosen to evaluate the basic quadratic and square root functions, the points are graphed, and the graphs are compared. Graphs are also created with an online...