Give the range of x - 2y = 0 for the domain {-1, 0, 4}

How would I find the range??

Question

Give the range of x - 2y = 0 for the domain {-1, 0, 4}

How would I find the range??

anonymous · Answer

Domain is basically what you plug in the x, and range is the y
So, let's go ahead and first get the equation ready so we can plug it in quickly.

x-2y=0
x=2y
x/2 = y

Now let's put in the three domains given into the x

-1/2 for -1
0/2 = 0 for 0
4/2 = 2 for 4

raveninneverland · Answer

Alright, I think I've caught on now! So, just divide 2 in the domain, and I'll get the range?

anonymous · Answer

Yes, for this particular equation. I just moved the equation around to make it easier to plug in, so you would just have to divide by 2. However, if there's a DIFFERENT equation in a future problem, you can just plug it into the x directly and solve for y, which would be the range.

raveninneverland · Answer

Okay, this has definitely helped! Thank you. :)