Question

how do you find the last digits of a perpendicular line equation... eg.
find a perpendicular line to y=1/2x+4
The answer is y=-2x+24 but how do you know its '+24' ?
thanks =)

Answer 1

The 24 doesn't really matter.

Answer 2

The most important value is the slope :)

Answer 3

any equation of the form:\[y=-2x+c\]would be perpendicular to:\[y=\frac{x}{2}+4\]

Answer 4

so could it end in say +3 or +9?
ahh okayy thanks everyonee =)