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)

Answer 1

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 \(x=-2\)

Answer 2

so as usual the answer is C
it is always C