# Write a piecewise function for each graph

This means we can write this absolute value function as a piecewise function. We have to start at 0, since dogs have to weigh over 0 pounds: The domain of f is the set of all real numbers.

We learned how about Parent Functions and their Transformations here in the Parent Graphs and Transformations section. It is also important to note that the domain of function f defined above is the set of all the real numbers since f is defined everywhere for all real numbers.

Here are the graphs, with explanations on how to derive their piecewise equations: The domain of f is the set of all real numbers since function f is defined for all real values of x. To review how to obtain equations from linear graphs, see Obtaining the Equations of a Line, and from quadratics, see Finding a Quadratic Equation from Points or a Graph.

In the interval -11] the graph is a horizontal line.

The graph, domain and range of these functions and other properties are examined. In the interval - inf2 the graph of f is a parabola shifted up 1 unit. Free graph paper is available. From the graph of f shown below, we can observe that function f can take all real values on - inf0 U 01] which is the range of function f.

Therefore, the piecewise function is: Solution to Example 8: The domain of f given above is the set of all real numbers except More references and links on graphing. Write a function that models this situation. Definition of Piecewise Functions A piecewise function is usually defined by more than one formula: So the whole piecewise function is: Here are more examples, with explanations.

The piecewise function is: You might want to review Quadratic Inequalities for the second example below: Solution to Example 6: Obtaining Equations from Piecewise Function Graphs You may be asked to write a piecewise function, given a graph. As x becomes very large, e -x also approaches zero.

So, the piecewise function is: Solution to Example 9:There is an open dot at (2, 7) and so the left portion of the graph can be represented as y = 2x + 3 when x > 2. Now let us write the Piecewise Function to represent the graph. Piecewise Functions Examples. Piecewise Functions A Function Can be in Pieces.

We can create functions that behave differently based on the input (x) value. A function made up of 3 pieces. Example: And this is how we write it: The Domain (all the values that can go into the function).

Piecewise Functions Name: _____ Part mint-body.comlly graph each of the following.

Identify whether or not the graph is a function and if it is. Piecewise Functions REPRESENTING PIECEWISE FUNCTIONS Write and graph a piecewise function that gives your weekly pay P in terms of the number h of hours you work.

b. How would the graph of the function change if each ≤ was replaced with each. Note how we draw each function as if it were the only one, and then “erase” the parts that aren’t needed. You may be asked to write a piecewise function, given a graph.

Now that we know what piecewise functions are all about, it’s not that bad! In this lesson you will learn how to graph piecewise functions by using your knowledge of graphing other functions.

Write a piecewise function for each graph
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