parallel when a=2
perpendicular when a=-1/2
It would be 1,200,000 because the 9 is in the ten thousand place.
Honestly I think you are correct, not trying to take your point. :)
If h=6 then the problem is 6-2 which gets the answer of 4
Elimination
first i would divide the second equation by -2.
x - y = -2
-x- 2y = -19
the x is eliminated.
-3y = -21
divide each side by -3.
y = 7
plug 7 in for y to solve for x
x-7 = -2
x = 5
(5,7)
