Domain and Range of Radical Functions from a Graph

Domain and Range of Radical Functions from a Graph

What is Domain?

• All possible x values for a function

• Ask yourself does this go left or right

• Left= negative infinity

• Right=positive infinity

What is Range?

• All possible y values for a function

• Ask yourself does the graph go up or down?

• Up=positive infinity

• Down=negative infinity

Steps

• Type the equation into Desmos

• Find the "start"

• the x-coordinate will be the beginning (if the graph goes to the right) or the end (if the graph goes to the left) of your domain

• the y-coordinate will the the beginning (if the graph goes up) or the end (if the graph goes down) of your range