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how can you tell whether a relationship is a function or not?

Sagot :

The relation is function or not can be determine by vertical test.

In vertical line test, the vertical line is draw on the same graph at which relation is plotted if vertical line intersects the curve at one point only then such relation is a function and if vertical intersect the the graph of relation twice or more then such relation is not a functon.

So relation is functon or not can be determined by vertical line test.