Friday, July 31, 2009

Convert into Standard Form...Need help!!!?

I need to convert a slope-intercept form, y=2x+2, into a standard form. I know that Standard form is Ax+By=C, but I do not know how to convert the slope-intercept form into the standard form.





Please help


!!!!

Convert into Standard Form...Need help!!!?
All you have to do is use the addition and subtraction properties to move things around:


y=2x+2


Subtract 2x from both sides:


y-2x=2x-2x+2


Simplify:


y-2x=2


Use the commutative property (a+b=b+a)


-2x+y=2


Now it is standard form A=-2, B=1, C=2
Reply:This just means get x and y all on the left side.





So, subtract 2x from both sides of your equation. You'd get


-2x + y = 2 ... which is the answer.





Sometimes books require you to make "A" positive. If yours does, you just change the sign on everything. You'd get


2x - y = -2.


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