SAT Math Practice Question #12534 - SATify | SATify

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SAT Math Practice Question #12534 - SATify | SATify

#12534

coordinate geometry

circles

geometry

hard

150 sec

In the xy-plane, the graph of $- x^{2} + 4 x - y^{2} - 6 y = 4$ is a circle. What is the radius of the circle?

A.

2

B.

3

C.

4

D.

5