Which of the following is perpendicular to y=1/2x-6 and passes through (4,2)? A. y=x+5 B. y=4x+2 C. y=1/2x-2 D. y=2x-6

Answer 1

None of these. The slopes of perpendicular lines are opposite reciprocals. So with the given line having a slope of 1/2, we need a line with slope = - 2. The perpendicular line through (4,2) is y = -2x + 10.