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Math·Algebra·Linear equations in two variables

hard

$\frac{1}{9}x+\frac{3r}{7}y=34$ One of the equations in a system of two linear equations is given, where $r$ is a nonzero constant. The system has no solution. If the other equation in the system is graphed in the $xy$-plane, what is the slope of the graph?

A

$-\frac{27r}{7}$

B

$-\frac{27}{7r}$

C

$-\frac{7r}{27}$

D

$-\frac{7}{27r}$