1. 2-6 Special Functions

2. Warmup: Which scatter plot represents the data shown in the table?
C D.

3. Graph the function. Identify the domain and range
Piecewise-Defined Function : A function written using two or more expressions. A dot on the graph indicates it is included. An open circle indicates that the point is not included in the graph.
Graph the function. Identify the domain and range D: R:

4. Write the piece-wise defined function for this graph.

5. A step function consists of line segments
A step function consists of line segments. It is written as a single expression.
The most common step function is the greatest integer function. It is written as 𝑓 𝑥 = 𝑥 . The 𝑥 means the great integer less than or equal to x.
For example, =3 and −4.6 =−5 (you can think of this graphically as rounding to the left integer.
Find in MATH / NUM / int(
Or in catalog in “i” things
𝑓 𝑥 = 𝑥

7. The vertex here is (0, 0).
Slope when x > 0 is 1.
Slope when x < 0 is -1.
Symmetrical about the y-axis, so x = 0 is the equation of the line of symmetry.

8. To graph absolute value on your graphing calculator, find abs( under MATH / NUM / abs( or in the catalog (it is the first choice!) The parentheses have to contain all that is inside the absolute value.
28. Graph 𝑓 𝑥 =2 𝑥−4 +6. Identify the domain and range.
I am changing the assignment. It will be
2-6 p72/ odd, 24-29, 32, odd.