SOLUTION: What is the domain and range of y=x+1 y+x^2+1 y=√x+1

Algebra ->  Functions -> SOLUTION: What is the domain and range of y=x+1 y+x^2+1 y=√x+1      Log On


   



Question 1026024: What is the domain and range of
y=x+1
y+x^2+1
y=√x+1

Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
y=x+1; domain and range are both (-oo,+oo)
y=x^2+1; domain is infinite (-oo,+oo); range is [1,oo), because x^2 is never less than 0.
graph%28300%2C200%2C-10%2C10%2C-10%2C10%2Cx%5E2%2B1%29
y=sqrt(x)+1. If that is how it should be written, the domain of x is [0,oo); the range is [1,oo)
if sqrt(x+1), then domain is [-1,oo), range [0,oo)
graph%28300%2C200%2C-10%2C10%2C-10%2C10%2Csqrt%28x%2B1%29%29%29