SAT Math Practice Question #30396 - SATify | SATify

Home Practice Exams Features Pricing Quick Start Guide About

Loading...

SAT Math Practice Question #30396 - SATify | SATify

#30396

linear

coordinate geometry

medium

60 sec

Calculator OK

Line $L_{1}$ has a slope of $m_{1}$ , and line $L_{2}$ is perpendicular to line $L_{1}$ in the $x y$ -plane. Which of the following expressions represents the product of their slopes, $m_{1} \cdot m_{2}$ ?

A.

$m_{1}$

B.

$- m_{1}$

C.

$1$

D.

$- 1$