Determine whether each relationship is a function. state the domain and range of each relation.

The answer is:

The relationship is not a function.

Domain: {4,2}

Range: {5,6,7,8}

Since both inputs has two outputs, the relation is not a function.  A function exists when there is only a single value for each input, if there is more than one output for each input, the relation is not a function.

For this case, 4 (domain)  has two outputs (5 and 6), while 2 (domain) has  also two outputs (7 and 8).

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19.side- angle- side

20. angle- side- angle

step-by-step explanation: