suppose you want to add a sprinkler system, and the location of one section of the sprinkler line can be described by the equation
y = - 1/2x - 4
complete the following table:
x y
? -1
-2 ?
? -4
2 ?
8 ?
my answers:
x y
6 -1
-2 -3
12 -4 i still get 12 for x
2 -5
8 -8
Hmmm.
-4=1/2 x -4
add 4 to each side.
x=0