Math
posted by
Steph
.
What is the domain of
y = sqrt(5  x)

Math 
Steph
and the range please!

Math 
Steve
√u is only defined where u>=0.
so, √(5x) is only defined where 5x >= 0.
Thus, the domain is all reals x <= 5.

Math 
Steve
the range is all reals >= 0.