Question

What is the equation of the line that passes through point (-1,4) and is perpendicular to the following equation? y= -1/2x - 4

Answer 1

y=2x-4

Explanation:

To find an equation perpendicular to another one, you must find the negative inverse of the slope.

In this case, -1/2 has an inverse of -2, but because we're finding the negative inverse, the two negatives cancel out and we get 2, the slope of our perpendicular equation, which crosses the initial equation, making a right angle.