SAT Math Practice Question #31717 - SATify | SATify

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SAT Math Practice Question #31717 - SATify | SATify

#31717

linear equations

slopes

coordinate geometry

medium

45 sec

In the $x y$ -plane, line $A$ is defined by $4 x - y = 10$ . Line $B$ is perpendicular to line $A$ . What is the slope of line $B$ ?

A.

-4

B.

$- \frac{1}{4}$

C.

$\frac{1}{4}$

D.

4