Write an equation of a line perpendicular to line cd below in slope-intercept form that passes through the point (−1, 6).

line cd is shown. c is at 1, 1. d is at 3, 5.

y = −0.5x − 5.5
y = −0.5x + 5.5
y = 2x + 13
y = 2x − 13

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