In the xy-plane, line l is perpendicular to the graph of the function f(x) = 5x - 2.

Line l could be the graph of which of the following functions?

A.) g(x) = -5x

B.) g(x) = (-1/5)x

C.) g(x) = x - 2

D.) g(x) = (1/5)x

E.) g(x) = 5x

Line l could be the graph of which of the following functions?

A.) g(x) = -5x

B.) g(x) = (-1/5)x

C.) g(x) = x - 2

D.) g(x) = (1/5)x

E.) g(x) = 5x

Perpendicular lines have slopes which are negative reciprocals.

Slope-intercept form is y = mx + b

m is the slope

b is the y-intercept

f(x) = 5x - 2

y = 5x - 2 {slope-intercept form}

slope = 5 {the number in front of the x}

The line perpendicular to that would have a slope of -1/5.

**B.) g(x) = (-1/5)x**has a slope of -1/5

*- Algebra House*