How do you solve #y = -sqrt(x+4)# and is it a function?
2 Answers
Yes
Explanation:
Given the formula:
#y = -sqrt(x+4)#
Note that for any
If
So the (implicit) domain of this relation is
Another way of expressing the "unique value of
graph{-sqrt(x+4) [-10, 10, -5, 5]}
This is a function
Explanation:
There is no solving involved;
is a function because for all valid values of
this relation generates one and only one value for
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