Question 791285: Graph the circle (x-2)^2+(y+1)^2=16 and plot and label a point 'C' at the center and what are the coordinates of 'C' Answer by DrBeeee(684) (Show Source):
You can put this solution on YOUR website! Given the circle
(1)
The x coordinate of the center point C(x,y) is given by
(2) x-2 = 0 or
(3) x = 2
The y coordinate of C is given by
(4) y+1 = 0 or
(5) y = -1
The center of the circle is at the point C(2,-1)
The radius squared is 16, so we can get the radius from
(6) r^2 = 16 or
(7) r = 4
To graph you can use a graphics calculator or use a compass with point at (2,-1) and spread a "distance" of 4 and scribe the circle.
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