Graphing Absolute Value Functions on TI 83/84

This tutorial demonstrates how to graph absolute value equations using a graphing calculator. It covers graphing y = |x|, y = -|x|, and y = |3x|, providing step-by-step instructions for each equation. The video explains how to navigate the calculator's Y equals menu, use the math function for absolute values, and visualize the resulting graphs.

What is the first step to graph y = |x| on a graphing calculator?

• Clear the calculator memory

• Press the Graph button

• Go to the Math menu

• Go to the Y equals menu

Which menu option is used to select the absolute value function?

• Math

• Number

• Y equals

• Graph

How do you graph y = -|x| on a graphing calculator?

• Use the Math menu and select the negative sign before the absolute value

• Use the Y equals menu and select the negative sign after the absolute value

• Use the Graph menu and select the negative sign

• Enter the equation directly

What is the visual difference between the graphs of y = |x| and y = -|x|?

• y = -|x| is a vertical shift of y = |x|

• y = -|x| is a reflection over the y-axis of y = |x|

• y = -|x| is a horizontal shift of y = |x|

• y = -|x| is an upside-down version of y = |x|

To graph y = |3x|, which step is necessary after entering the equation?

• Press the Y equals button

• Press the Graph button

• Press the Clear button

• Press the Math button

What is the effect of the coefficient 3 in the equation y = |3x|?

• It shifts the graph vertically

• It stretches the graph vertically

• It stretches the graph horizontally

• It shifts the graph horizontally