What is the domain and range of x =(y+2)^2x=(y+2)2?

1 Answer
Feb 15, 2017

Domain: [0, oo)[0,), Range: [-2, oo)[2,)

Explanation:

To graph, you need to solve for yy:

Square root both sides: sqrt(x) = y+2x=y+2
Isolate the variable yy: y =sqrt(x) -2y=x2

Analytically finding the domain:
sqrt(x) >=0x0 which means x>=0x0

If x>=0x0 then y >= -2y2

From the graph: graph{sqrt(x) - 2 [-10, 10, -5, 5]}