Answer
The firs graph attached (picture 1)
Explanation
To reflect the function over the x-axis, you multiply the whole function by -1. So, is you want to reflect [tex]f(x)[/tex], you just need to multiply [tex]f(x)[/tex] by -1: [tex]f(x)*-1=-f(x)[/tex].
Since our function is [tex]f(x)=\sqrt{x}[/tex], we are going to multiply the whole function by -1 to the get the the graph of its reflection over the x-axis (picture 1)
Reflection of f(x) over the x-axis:
[tex]-f(x)=\sqrt{x}[/tex]
[tex]g(x)=-\sqrt{x}[/tex]
