How much after subtraction
Answer:
The additive inverse of 0 is 0.
Opposites.
Their sum is zero so they are called opposites.
#3.
in this case, all you need to do is to look at the intersecting point. each units represent 2, the coordinates of the intersection are (4,-1), so D is the choice.
#4. B is the choice. two lines either intersect once (one solution), never (parallel, no solution), or overwrap (merge, infinite solutions)
