# How do you graph absolute value y = absx - x on a TI-84 Plus Calculator?

Oct 14, 2015

With absolute values you usually have two graphs to make

#### Explanation:

(1) $x \ge 0$ the bars are not necessary

$\to y = x - x = 0$

(2) $x < 0$ the bars will change the sign

$\to y = - x - x = - 2 x$
graph{|x|-x [-10, 10, -5, 5]}