Give the range of x - 2y = 0 for the domain {-1, 0, 4}.
A. Range = {-2, 0, 8}
B. Range = {-1, 0, 4}
C. Range = {5, 0, -2}
D. Range = {-1/2, 0, 2}

Question

Give the range of x - 2y = 0 for the domain {-1, 0, 4}.
	A.	Range = {-2, 0, 8}
	B.	Range = {-1, 0, 4}
	C.	Range = {5, 0, -2}
	D.	Range = {-1/2, 0, 2}

anonymous · Answer

Range = y-values

anonymous · Answer

So plug in the domain, or x-values into the equation. That'll give you the y-values, which is the range, then choose the correct choice!

anonymous · Answer

I dont get it. but ok

anonymous · Answer

Like for the first one, take -1 and plug it in for x. Then solve for y.

anonymous · Answer

That's the first range.

anonymous · Answer

That doesn't even make sense to me. I've been sick for a while and forgot all math, and now im all confused :/

anonymous · Answer

Ill walk you through the first one:

anonymous · Answer

|dw:1332108583657:dw|. So I subtituted -1 for x. Do you get that?