To check: Whether is linear if f and g are linear; find the slope of the graph if it is linear.
The composition function is a linear function of the slope .
The linear functions are .
The composite function is defined as follows.
Substitute for x in and find the composition function .
Observe that in the form of the linear function where m is slope and c is constant.
Thus, it can be concluded that the composite function is a linear function with the slope .
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