Solve the system of equations below by graphing both equations with a pencil and paper. What is the solution?

y = -x - 1
y = x + 3

A. (0, 3)
B. (-1, 2)
C. (-2, 1)
D. (0, -1)

Question

Solve the system of equations below by graphing both equations with a pencil and paper. What is the solution?

y = -x - 1 
y = x + 3

   A. (0, 3) 
   B. (-1, 2) 
   C. (-2, 1) 
   D. (0, -1)

anonymous · Answer

solve 
$$x+3=-x-1$$ in three steps 
a) add x to both sides to get $2x+3=-1$
b) subtract 3 from both isdes to get $2x=-4$
c) divide by 2 to get $x=-2$

anonymous · Answer

so as usual the answer is C
it is always C