8. Solve for y. **THINK! a) what type of angles do you have? b) what is their relationship (add up to 90, add up to 180, or congruent)? c) set up an equation
and solve *

a. Linear pair (supplementary)

b. Add up to 180°

c.

Step-by-step explanation:

78° and (5y + 2)° are a linear pair. They are supplementary, and add up to 180°.

Therefore, the following equation expresses their relationship:

Solve for y

Subtract 80 from both sides

Divide both sides by 5

2 and 1.

step-by-step explanation:

plug in each answer. 0 doesn't work, 1 does. so does 2. 4 doesn't:

0 = 1 is not true.

2 = 2 is true.

4 = 4 is true.

8 = 16 is not true.

hope this !