Find the slope not graph (2,-4) and (4,-2)

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Urgent? will give brainliest to the first correct answer what is the area of the figure?

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