How do you do system of equation word problems?

Step 1: Isolate a variable. The variable y is already isolated in the first equation.

Step 2: Plug the result of Step 1 into the other equation and solve for one variable. Plug.

Step 3: Plug the result of Step 2 into one of the original equations and solve for the other variable.

Step 4: State the solution.

Step-by-step explanation:

y = - 6

step-by-step explanation:

given the point (- 2, y) lies on the graph then it is a solution of it's equation.

substitute x = - 2 into the equation for value of y

y = 3(- 2) = 3 × - 2 = - 6

the point on the graph is (- 2, 6)