Question

Given the system of equations, what is the solution?

x + 3y = 5
x - 3y = -1

{(-4, -3)}
{(2, 1)}
{(-2, 3)}

Answer 1

B

Answer 2

since the +3y and - 3y cancels each other out, we are left with:
x=5
x=-1
then the next step is to add:
2x=4
divide both sides by 2 to get the value of x:
x=2
plug in the value of x into one of the equations
2+3y=5
to get the value of y, subtract 2 on both sides of the equation, we're left with:
3y=3
then to get y, we divide both sides by 3
y=1
therefore:
x=2; y=1