Question

18. Referring to question 17, which equation could be thatwhich is perpendicular to the equation given?

Answer 1

The slope of one line perpendicular to another is the negative inverse

$m_p=-\frac{1}{m}$

For the equation

$y=2x-5$

The slope of the line is

$m=2$

So the slope of a perpendicular line will be:

$m_p=-\frac{1}{2}$

So the anwer is A

$y=-\frac{1}{2}x+2$