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lynna
New Member

USA
2 Posts

 Posted - 10/16/2007 :  18:56:55 Please help me fine and equation for the left half of the circle given by (x+2)+y=9I foiled the x+2 and solved for x. the answer I got was x= -y-4x-5 but I didn't know if it was ok to still have the x in the answer.

skeeter

USA
5634 Posts

 Posted - 10/16/2007 :  19:28:50 (x + 2) + y = 9(x + 2) = 9 - yx + 2 = -(9 - y)x = -[2 + (9 - y)]

sahsjing

USA
2399 Posts

 Posted - 10/17/2007 :  16:48:27 This is the same as you switch x and y, and then find the lower half of the circle.

skeeter

USA
5634 Posts

 Posted - 10/18/2007 :  08:13:36 quote:Originally posted by DavidSkeeter, isn't that just a translation of the entire circle to the left?If she wants the left half, should there not be boundaries defined?{(x-2) + y^=9; -5<=x<=-2}plot some points using my last equation and see the result for yourself.
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