In the xyplane, 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 Slopeintercept form is y = mx + b {in function notation it is f(x) = mx + b} m is the slope b is the yintercept Perpendicular lines have slopes which are negative reciprocals of each other. In f(x) = 5x  2 the slope is 5 To find the line perpendicular to that, you need a line with a slope of (1/5) {the negative reciprocal of 5} B.) g(x) = (1/5)x is perpendicular to the given line  Algebra House
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