Question

Which of the following is perpendicular to the line y= -1/2x+8

Answer 1

The slope of two lines that are perpendicular when multiplied is equal to -1

So

$-\frac{1}{2} \times m = -1\\\\m = 2$

The equation that is perpendicula to line y = -1/2x + 8, is y = 2x + 8