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hint: solve for y
example: 5x+10y = 20 5x+10y-5x = 20-5x 10y = -5x+20 10y/10 = (-5x+20)/10 y = -1/2x + 2 The slope here is -1/2. This is not the answer as it's just an example
how are you getting that
Never mind. That doesn't make since.
I really don't know..
look back at my example `5x+10y = 20` when I solved for y. What was the first thing I did? How did I move the 5x over?
I couldn't tell you. Sorry I suck at math.
compare `5x+10y = 20` to `5x+10y-5x = 20-5x` what's different?
hopefully you see the 5x being subtracted? or no?
ok so go back to the original `2x-2y = 6` what do we do first?
maybe it might help to think of it as 0+2x-2y = 6
we have to undo that +2x
My laptop is almost dead.. Is there a faster way to find the answer?
we can come back to this later. Don't worry
but I need to get this done tonight..
subtract 2x from both sides |dw:1443502454375:dw|
So the answer won't be negative?
so we now have -2y = -2x+6 we can then divide both sides by -2 to get -2y/(-2) = (-2x+6)/(-2) y = x-3
so 2x - 2y = 6 turns into y = x-3 after we isolate y
compare `y = 1x-3` to `y = mx+b` m = slope b = y-intercept
So is the answer -3?
1 is the answer?
yeah the slope is 1
-3 would be the y intercept