in*AOsotut* value runcoo •iniiiillimri.,^
Equation
a
•!•
Sketch
C ••1
Coordinates of vertex Opens up/down
I I !•!•
y i*+3l j
y~ J*-4l
2. Use the results tO answer thf frklh-mrino <
a. Jose thinks that the absolute value function should be nicknamed the "rebound" function. What do you think he means? Do you agree?' b. How can you predict whether the graph of the equation will open upward or downward? c. Summarize how changing the value of a affects the graph of the function. ,
I 3. Use your graphing calculator to experiment with other forms of the | absolute value function; for example, try y - I ax + b\. Record any *. patterns you notice.
ACTIVITY 22
41