Question

6.02] For the following system, if you isolated y in the second equation to use the Substitution Method, what expression would you substitute into the first equation?

2x + y = 2
x − y = −6

−6 − x

−6 + x

6 − x

6 + x

Answer 1

First step of the substitution method is to solve for one variable. They've already told you which one. ie- Solve the second equation for y and compare.

Answer 2

So is it B?

Answer 3

how do you solve for y?
Step 1 move the x away from y
step 2 make sure you get y, not -y
what do you get?

Answer 4

D?

Answer 5

Correct!