Question: 1.For (a), find center and radius. For (b), explain why it has the same graph as (a). (a) ( x -5) 2 +( y +3)

1.For (a), find center and radius. For (b), explain why it has the same graph as (a).

(a)(x-5)2+(y+3)2=49(b)x2-10x+y2+6y=15

2.For each of the following, fill in the blank to create a perfect-square trinomial:

(a)x2-6x+____(b)y2+7y+____(c)x2-0.4x+___(d)y2-___y+42.25

3.Find the center and the radius of the following circles:

(a)x2+y2-6x+y=3(b)x2+y2+8x=0(c)x2+y2+2x-8y=-8

4.The graph of x2-6x+9+y2+2y+1=25 is a circle. Where is the center of the circle? What is the radius of the circle?

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