CPM Homework Help : INT2 Problem 9-119

Piecewise function, with 2 unconnected sections: Left: ray, starts with open point (2, comma 1), passing through the point (0, comma negative 3). Right: ray, starts at open point (2, comma 3), passing through the point (7, comma 8). Write a set of equations for the piecewise-defined function shown on the graph at right. Be sure to include the domain for each part of the function. 9-119 HW eTool

Hint:

Look at the two pieces of the function. Notice the open and closed circles, and the values at $x = 2$ .

Answer:

$f(x)=\begin{cases}x+1, \ x \geq 2\\2x-3, \ x< 2 \end{cases}$

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