Question

Which is the graph of the function f(x)= negative square root x

Answer 1

a

Explanation:

yes

Answer 2

First, note that
`√(x)` is always positive (except for x=0), so
`-√(x)` must be always negative.

Thus, the only plausible graphs are 1 and 3 since they are below the x-axis.

Now,
`√(x)` and
`-√(x)` are only defined for x≥0, because only for these x'es we can take the square root.

Note that the third graph has domain (-infinity, 0], so it is not the right one, while 1 is ok.


Answer: first graph