SAT Math Practice Question #33528 - SATify | SATify

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SAT Math Practice Question #33528 - SATify | SATify

#33528

coordinate geometry

circles

geometry

medium

90 sec

In the xy-plane, the graph of $2 x^{2} + 12 x + 2 y^{2} - 16 y = 78$ is a circle. What is the radius of the circle?

A.

6

B.

7

C.

8

D.

9