3y = ax + 7
3(4) = a(3) + 7
12 = 3a + 7
3a = 5
a = 5/3
Answer: They're capitals of cities.
Step-by-step explanation:
You could continue the set with Madrid, Bucharest, Sofia, Luxembourg, Berlin, Rome, Athens... and so on.
Answer:
Square:
Vertex: (10,-68)
