The function is .

The above function is a piece wise - defined function is composed of two linear functions.

The linear function .

Substitute in above function. \ \

. \ \

The linear function .

Substitute in above function. \ \

.

The points are .

Graph :

At and to the left of the graph is the line , and to the right of the g raph is the line .

Graph the function.

graph is :

Observe the above graph :

The point is a solid dot and the point is a open dot. \ \

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Graph of the piece - wise function is :

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