1) Is this graph a linear function? Explain.....2) Is this graph a linear function? Explain....

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Answer:
Step-by-step explanation:
If the graph is not a straight line, it is not a linear function. Neither graph 1 nor graph 2 is a straight line, so neither is a linear function.
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Graph 2 is made of parts of two straight lines. It is not one straight line, so not a linear function. It is called "piecewise linear," which is different.