Question

The equation of line CD is (y−3) = − 2 (x − 4). What is the slope of a line perpendicular to line CD?

Answer 1

1/2

Answer 2

This equation is already in point-slope form, (y-y1) = m(x-x1). m is the slope.

To find the perpendicular slope, you have to change the sign and flip the numerator and denominator.

Answer 3

thanks guys