What mapping rule should be used when reflecting a figure across the line y = x?
o (x, y) + (y, z)
o (1, y) → (1, - y)
o (z, y) → (-y, z)
o (c, y) + (-2,y)
o (x, y) = (–a, – y)
chec

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