Question

Could someone double check my answer? Its just solving for y, but I think I messed up.
1.
3x+6y=12
I got y=2-1/2x

2.
y-4=-1/2(x+1)
For this one I didn't really know where to start so just point me in a direction and then I'll solve it.

Answer 1

The first one is correct.

Answer 2

Well for the first one we have a simplified (if you divide both sides by 3) version of

3x+6y=12

to

x+2y=4

Answer 3

In the second one, just add 4 to both sides.

Answer 4

So y=(4-x)/2
y=2-(1/2x)

Answer 5

@mathstudent55 What do I do next in the second one? I'm confused by what I have to do with the parentheses. (Way, way misspelled that :P)

Answer 6

@codyw00 try using PEMDAS distribute the -1/2 to the parentheses then see what you can do from there

Answer 7

@amanda7414 Thanks and I've gotten to y=-0.5x+3.5 So is that in y=mx+b formula now?

Answer 8

correct

Answer 9

\(y-4=-\dfrac{1}{2}(x+1)\)
1. add 4 to both sides:
\(y=-\dfrac{1}{2}(x+1) + 4\)
The equation is already solved for y, but that may not look very good, so we can try to combine like terms by first distributing the -1/2

Answer 10

Thanks

Answer 11

Np

Answer 12

\(y=-\dfrac{1}{2}(x+1) + 4\)
2. distribute the -1/2:
\(y = -\dfrac{1}{2} x - \dfrac{1}{2} + 4\)
3. combine like terms on right side:

Answer 13

\(y = -\dfrac{1}{2} x - \dfrac{1}{2} + \dfrac{8}{2}\)

\(y = -\dfrac{1}{2}x + \dfrac{7}{2} \)