Adjacent angles are angles that are side by side (right next to each other). They share a side. #7 and 11 are pairs of adjacent angles.
Vertical angles are angles that are directly across from each other. They are the same angle. #8 and 9 are vertical angles.
#10 and 12 do not fit either of these descriptions so they are neither.
Answer:
k = 
Step-by-step explanation:
The equation of proportionality is
y = kx ← k is the constant of proportionality
y =
x ← is in this form
with k = 
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The answer is 24! You can find this out by just counting them.
Step-by-step explanation:
-7.6x+7.4-3.5x-6.5
-7.6x-3.5x+7.4-6.5
-11.1x+0.9