SOLUTION: Problem #8 I have read the chapter many times and can not seem to figure it out. Determine whether each relation is a function. y=square root of x-1. How do I figure this out?

Algebra ->  Algebra  -> Functions -> SOLUTION: Problem #8 I have read the chapter many times and can not seem to figure it out. Determine whether each relation is a function. y=square root of x-1. How do I figure this out?       Log On

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Question 81711This question is from textbook
: Problem #8
I have read the chapter many times and can not seem to figure it out.
Determine whether each relation is a function.
y=square root of x-1.
How do I figure this out? Please help
This question is from textbook

Answer by rapaljer(4551) About Me  (Show Source):
You can put this solution on YOUR website!
I would say that any equation in which you have the form y=sqrt%28x-1%29 , it IS a function. It's only when you have a "plus or minus" such as y=0%2B-sqrt%28x-1%29+, or an equation in which there is a y that is raised to an EVEN power, that it will NOT be a function.

R^2 at SCC