SOLUTION: THe rule for a mapping is y=√x. Find the domain of the mapping if the range is (3,4,5,6,7,8) and show how the answer was gotten

Algebra ->  Functions -> SOLUTION: THe rule for a mapping is y=√x. Find the domain of the mapping if the range is (3,4,5,6,7,8) and show how the answer was gotten      Log On


   

Question 1004236: THe rule for a mapping is y=√x. Find the domain of the mapping if the range is (3,4,5,6,7,8) and show how the answer was gotten
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
If the range (the y-values) is (3,4,5,6,7,8), then the domain or x-values will be the squares of those numbers...
Since y+=+sqrt%28x%29, then
y%5E2+=+x
and
the domain becomes (9,16,25,36,49,64)