Question

Write an equation of the line that is perpendicular to line y =(1/2) x – 7 and passes the point (0, – 3).

Answer 1

y = -2x -3

Explanation:

If a line is perpendicular to another line, it means that the gradient of the new line (one that is perpendicular) is going to be the negative reciprocal of the old one.

Reciprocal means that it is flipped. So 1/2 would be 2 and 5 would be 1/5