# What is the domain and range of #y = 3 sqrt (x-2)#?

##### 1 Answer

Apr 25, 2017

#### Explanation:

For real numbers the root cannot be negative.

#rArrx-2>=0rArrx>=2#

#rArr"domain is " x inRR,x>=2#

#"hence " y>=0#

#rArr"range is " y inRR,y>=0#

graph{3sqrt(x-2) [-10, 10, -5, 5]}