Given b = - 4 and h = -2, what is the equation of the graph if the parent function is y= $$\sqrt{x}$$

Question

anonymous · Answer

@mathstudent55 heyy

anonymous · Answer

@mathstudent55 this is one of the more harder ones that really stump me :(

anonymous · Answer

Given a = -1, h = 4, and k = -2, what is the equation of the graph if the parent function is  y= $$\sqrt{x}$$   this is my second question

mathstudent55 · Answer

Where do b and h go in this type pf [arent function?

anonymous · Answer

i dont know anything thats just what the question says

mathstudent55 · Answer

Is it
$y = \sqrt{b(x - h)} +k $ ?

mathstudent55 · Answer

You must have some studying material that explains the form of the parent function.

anonymous · Answer

im not sure, just try your best and solve it and ill see if its one of the multiple choice answers when you get your answer

anonymous · Answer

Use the equation

$$y = a \sqrt{x-h}+k$$
sometimes the equation can also be expressed as
$$y=a \sqrt{x-b}+c$$ In addition, there's also the equation$$y=a \sqrt{mx-h}+k$$ I would probably use the last one where your b will replace m.

anonymous · Answer

so what is the answer to the first question?

mathstudent55 · Answer

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

anonymous · Answer

none of those are the multiple choice they all have -1 in front of it accept for 1 answer

anonymous · Answer

@mathstudent55 Are you sure? I thought that's where a is, not b.

mathstudent55 · Answer

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

anonymous · Answer

thats not it either i dont think cuz thats not one of the multiple choice answers

anonymous · Answer

@mathstudent55 Okay that's better XD

mathstudent55 · Answer

No, I am not sure. I mentioned above that I have not seen the discussion where we learn where b and h are. I am just guessing.

anonymous · Answer

@MeganxCherry What are your choices?

anonymous · Answer

this is the multiple choice A$$-1\sqrt{x+4}-2$$

anonymous · Answer

choice B $$-1\sqrt{x-4}-2$$

anonymous · Answer

choice C y= $$\sqrt{x-4}-2$$

mathstudent55 · Answer

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

anonymous · Answer

Choice D $$-1\sqrt{x-4}+2$$

mathstudent55 · Answer

I don't know. Look in your lesson and see where the b and h belong.

anonymous · Answer

which one is it

anonymous · Answer

RPguy do you know? :(

anonymous · Answer

The thing is that it's really weird to have b and h in the same equation... It's not expressed in a way that I'm familiar of. The only expressions are the ones I've posted above.

anonymous · Answer

damn so you dont know the answer?

anonymous · Answer

In this scenario it seems that b = h and h = k, which is just really messed up.

anonymous · Answer

Give me a couple minutes

anonymous · Answer

Okay<3

anonymous · Answer

I think you gave me choices for the second question instead of the first.
The second question follows the expression:
$$y=a \sqrt{x-h}+k$$ and literally just plug in the information you have
$$y=-1\sqrt{x-4}-2$$

Idk about the first question though

anonymous · Answer

yeah your right i gave you the multiple from the second question by accident. so what would the answer be what letter choice? your such a great help!

anonymous · Answer

i got the second question down so im gonna give you the multiple choice for the first one now

anonymous · Answer

thankyou hold on <3

anonymous · Answer

A $$\sqrt{4x+8}$$

anonymous · Answer

B $$\sqrt{4x-8}$$

anonymous · Answer

C $$\sqrt{-4x-8}$$

anonymous · Answer

D $$\sqrt{-4x+8}$$

anonymous · Answer

Take your time, thankyou so much!!

anonymous · Answer

I think it's D. Using @mathstudent55 's equation 
$$y=a \sqrt{b(x-h)}+k$$ we can plug in our given information $$y=\sqrt{-4(x-2)}$$ Which further gives us $$y=\sqrt{-4x+8}$$