SAT Math Practice Question #12401 - SATify | SATify

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SAT Math Practice Question #12401 - SATify | SATify

#12401

equations

coordinate geometry

circles

hard

70 sec

In the xy-plane, the graph of the given equation is a circle. What is the length of the circle's radius?

$x^{2} - 2 x + y^{2} + 16 y = 8$

A.

$65$

B.

$73$

C.

$81$

D.

$89$