Question

Which choice could be the equation of a line perpendicular to the line represented by this equation?y = 5x− 2A.B.y = 5x +2C.D.y = −5x + 5

Answer 1

5y = -× + c

Explanation:

If two lines are perpendicular, the product of their gradient equals -1.

We should note that the general equation of a line is y = mx + c, where m is the gradient.

For the line y = 5x - 2 , the slope is 5. The line that will be perpendicular to this line will have a slope of -1/5.

A line like 5y = -x + c fits the description