Answer:
x = -2
y = 6
Step-by-step explanation:
y = -3x
x + y = 4
the substitution method works nicely here because the first equation is already solved for 'y'
so we can substitute '-3x' for 'y' in the second equation:
x + (-3x) = 4
-2x = 4
x = -4/2
x = -2
now we can solve for y:
y = -3(-2)
y = 6
