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 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
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