A square root function has a domain of x ≥ –4 and range of y ≥ 2 . Which of the equations below match this description? (1 point)

Question

A square root function has a domain of x ≥ –4 and range of y ≥ 2 . Which of the equations below match this description?  (1 point)

klepez · Answer

$$y=\sqrt{x-4}+2$$
$$y=\sqrt{x+4}+2$$
$$y+\sqrt{x-2}-4$$
$$y=\sqrt{x+2}-4$$

anonymous · Answer

the domain of this function is given by the domain of the square root.
To get that you need to do an inequality

The argument of the square root must be greater or equal to 0.

Hope this helps

klepez · Answer

not really

anonymous · Answer

Well lets start with the first one:

$$x-4 \ge 0$$ 

now do this for all 4 choices and choose the one who matches with the given domain

klepez · Answer

is it the second one?

anonymous · Answer

yep