Answer:
x = 1
Step-by-step explanation:
So first we have to identify what f(x) and g(x) equals. We can do this by looking at their y-intercept and determining their slope, by its rise/run
the two equations are:
y = -2x - 1
y = x + 2
now we solve
f(x) + g(x) = 0
substitute
-2x - 1 + x + 2 = 0
simplify
-x + 1 = 0
divide by -1
x - 1 = 0
add one on both sides
x = 1
