Desmos Graphing Calculator

CalcReferenceCopy

Math·Algebra·Linear equations in two variables

medium

Line $k$ is defined by $y=4x+\frac{1}{2}$. Line $j$ is perpendicular to line $k$ in the $xy$-plane. What is the slope of line $j$?

A

$-2$

B

$-\frac{1}{4}$

C

$\frac{1}{2}$

D

$4$