X^2+(y+1)^2=4^2 a formula general
ES URGENT
grax<3

circle  centered at (0,-1) and radius 4.

Step-by-step explanation:

The equation of a circle of radius r, with center is (a,b) is

(x-a)^2+(y-b)^2=r^2.

x^2+(y+1)^2=4^2=(x-0)^2+(y-(-1))^2=4^2 so that a=0, b--1 and r=4.

fist on the left goes with the third on the right. second on the left goes with the fourth on the right. third on the left goes with the second on the right. the fourth on the left goes with first on the right

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step-by-step explanation:

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