SOLUTION: Can you please help me on this question: 1)State whether the relation is a function and give the domain and range. b)y=(x+4) (= square root)

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Question 204214: Can you please help me on this question: 1)State whether the relation is a function and give the domain and range.
b)y=(x+4)
(= square root)
Answer by RAY100(1637) About Me  (Show Source):
You can put this solution on YOUR website!
y=sqrt(x+4)
.
Eqn is a function, only one value of y, for each value of x
.
DOMAIN is [-4,infinity),,,,that is,,, -4<=x .
Range is [0, infinity),,,,,that is,,,0<=x .
A rough plot helps, (-4,0), (-3,1) ,(0,2), (12,4),,,etc
.