Solve each system of equation by substitution y = - 2x + 4 y = - 6. y = 4x - 5 x = 2. y = 5x - 8 y = x

1. Set y = - 6

-6 = - 2x + 4 then move 4 over

-10 = - 2x then divide both sides by - 2

5 = x

2. Set x = 2

y = 4 (2) - 5

y = 8 - 5

y = 3

3. Set y = x

x = 5x - 8 from here you want to isolate x by adding 8 to the left side and subtracting one x from the right side

8 = 5x - x

8 = 4x now you want to divide both sides by 4

2 = x

Now we want to solve for why, so in the original equation set x = 2

y = 5 (2) - 8

y = 10 - 8

y = 2

So when x = 2, y = 2