Answer:
Option D) Substitute for y in the first equation
Explanation:
When solving for a system of equation, we always need 1 equation to have x or y already isolated by itself. This makes it easy to substitute that variable into the other equation, solve, then substitute the other variable into another equation.
This will give us an ordered pair, known as the solution.
In this system, we have 2 equations. In the first one, we have no variables isolated. In the second one, we have y isolated on the left side of the equal sign. This means we can take what y equals (3x+2) and substitute that in for y in the first equation.
Hope this helps! :)