Which table of ordered pairs represents a proportional relationship? O
х
0
5
10
y
10
20
30
o
х
2
4
6
y
10
20
30
X х
1
2
3
y у
2
3
4

Identify all the cases where non-probability sampling is used when attempting to study the characteristics of a large city. studies on every subject in the population divide a population in groups and obtain a sample studies with a limited amount of time demonstrate existing traits in a population studies with the nth person selected