SAT Math Practice Question #11940 - SATify | SATify

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SAT Math Practice Question #11940 - SATify | SATify

#11940

linear equations

systems

hard

45 sec

In the system of equations below, what is the value of $a$ if the system has an infinite number of solutions?
$\frac{1}{4} x - \frac{2}{5} y = \frac{3}{10}$
$a x + y = c$

A.

$- \frac{1}{8}$

B.

$- \frac{3}{8}$

C.

$- \frac{5}{8}$

D.

$- \frac{7}{8}$