If the domain of y+2=x^2 is {-2,-1,1,3}, what is the range?

Question

Please help me!

Answer 1

Plug in values of the domain for x, and solve for y.  The result is the range value for that particular domain value of x.

 

eg: if x=-2,

 

y=x²-2=(-2)²-2=4-2=2.

 

so if the domain value is x=-2, the value of the range is y=2

 

Try it for the other values of the domain to complete the range values.