rewrite in standard y-format
2x-y-6=0
4x+2y+8=0

- anonymous

rewrite in standard y-format
2x-y-6=0
4x+2y+8=0

- katieb

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- anonymous

- anonymous

- anonymous

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## More answers

- anonymous

Do you want to write the equation as y in terms of x?

- anonymous

i don't know :/ the question says to rewrite the equations in standard y=format

- anonymous

ok let's start with the first one
|dw:1439391691986:dw|
What do you get when you do this?

- anonymous

y^2 and y?

- anonymous

-y+y, that's not y square now is it?
for example
-3+3 now that's not
3 square

- anonymous

ohhhh ok sorry not good at math

- anonymous

simply like how +5 and -5 cancel out, y and -y will also cancel out
|dw:1439391917728:dw|

- anonymous

Does that make sense?

- anonymous

sorta yes

- anonymous

so it becomes
|dw:1439392033570:dw|

- anonymous

That you can write out as|dw:1439392066771:dw|

- anonymous

ohh ok i see what you did

- anonymous

I hope you understood it

- anonymous

Let's try the second one ok?

- anonymous

kinda sorta, can you help me the second one to?

- anonymous

yep!

- anonymous

|dw:1439392238541:dw|
Can you think of what you should add to both the left and right side to separate y??
Like last time we had y, so we added -y or rather subtracted y
this time we have 2y, so we will subtract how many y??

- anonymous

2?

- anonymous

wait wouldn't the second one be y=2x+4

- anonymous

Sorry, I was looking up something so I forgot about you, but yeah, you must subtract 2y, also your equation is unfortunately wrong, but we will work that up!

- anonymous

well darn ok

- anonymous

|dw:1439392824716:dw|

- anonymous

Can you write the next step for me?

- anonymous

|dw:1439392869112:dw|

- anonymous

so we have
|dw:1439393082859:dw|
Now there's the problem, we want an equation for y, not for -2y!
But we can always divide both sides of an equation by any number we have, what if we divided both the sides by -2 here?

- anonymous

are we dividing -2 into 8?

- anonymous

No, we are dividing left and right side by -2
|dw:1439393245929:dw|

- anonymous

Can you divide each term by -2 for me?

- anonymous

so in order it is -2x,-4, and y

- anonymous

good job!!!
|dw:1439393486054:dw|

- anonymous

You can again flip left and right side if you want, it's the same thing, but the point is you have an equation of y in terms of x :)

- anonymous

so the equation is now y=-2x-4

- anonymous

yep and that is question solved!!, I hope you understood the procedure

- anonymous

i did thank you so much!

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