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SAT Math Practice Question #6340 - SATify | SATify

#6340

algebra

geometry

coordinate geometry

lines

slopes

equations

systems

hard

135 sec

Calculator OK

$5 x + 7 y = 1$
$a x + b y = 1$
In the given pair of equations, $a$ and $b$ are constants. The graph of this pair of equations in the xy-plane is a pair of perpendicular lines. Which of the following pairs of equations also represents a pair of perpendicular lines?

A.

$10 x + 7 y = 1 a x - 2 b y = 1$

B.

$10 x + 7 y = 1 a x + 2 b y = 1$

C.

$10 x + 7 y = 12 a x + b y = 1$

D.

$5 x - 7 y = 1 a x + b y = 1$