posted by student that needs help asap .
What is the equation of a line that is perpendicular to 2x+y=−4 and passes through the point (2, −8)
AM I CORRECT OR NO ???
i mean y=1/2x-9
nope, your slope is right, but when I substituted x = 2, I got
y = (1/2)(2) - 8
= 1 - 8
so the point does not lie on your line.
Furthermore, since the original equation was written in standard form, I think the same style of equation would be expected.
so its y=1/2x-7?
Your equation was correct.
For some reason I wrote down your equation as
y = 1/2x-8 to do my calculation,
and I then carried through the calculations with my typo.
yes, it is y = (1/2)x - 9
thnk you !