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Question

astrophysics · Answer

Why would you say no restrictions are needed?

ms-brains · Answer

y=0 
y=1 
That's why I assumed there were no restrictions needed.

astrophysics · Answer

What happens if y = -1?

ms-brains · Answer

The results are infinite..?

astrophysics · Answer

Well look at the denominator, we get undefined right? Since it's 0 and we can't divide over 0.

ms-brains · Answer

Right. So it'd be D...?

mathmale · Answer

In slightly different words, "division by zero is undefined."  So, whenever you see a rational function, such as the one you have here, immediately set the denom. to zero and solve for x, if possible.  In this case, you'll get x=-1.  So, what is the restriction on the variable x in this problem?   D is not correct, by the way.

mathmale · Answer

Hint:  substitute x=-1 into the denom of the given rational function.  What happens?  Is this OK or NOT OK?  Why?

astrophysics · Answer

Thanks @mathmale 

I have to go but it seems you're in good hands @Ms-Brains good luck

mathmale · Answer

Thx, Astro!

ms-brains · Answer

Thanks for the help. cx I figured it out. ^-^ You guys are awesome!

mathmale · Answer

Thx for the compliment.