You have to put abs(
Hit the y= button. then hit the math key, scroll over to number, select the first choice abs( make sure you end your parenthesis, then hit graph
Absolute value changes the sign of a number to positive, so negative one becomes positive one, and positive one stays positive one. Zero has no sign, and is therefore equal to its absolute value. If you use a graphing calculator, or a graphing program (online or installed software), and graph y equal to theabsolute value of x, you will see two lines, y=x from 0 to infinity and y=(-x) from 0 to negative infinity. When x=0, the two lines are the same because the negative of 0 is still 0.
Finding the Absolute value of a number.
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A piecewise function is a function defined by two or more equations. A step functions is a piecewise function defined by a constant value over each part of its domain. You can write absolute value functions and step functions as piecewise functions so they're easier to graph.
On a Texas Instruments calculator you can use abs. Other calculators may need a manual to find the steps.
Because it farts
Absolute value looks like | x | and means that no matter what x is, the answer is positive. Unless it looks like this, -|x|, in which case it'll be negative. Also if you are talking about graphing it looks like a "V".
You could use a graphing calculator.. or.. if you have 2 functions... get y (or x) on one side like: y = blah blah blah then get the other equation to do that too. Now you have two equations that equal to y. so now you get y = equation A, and y = equation B and put them together. Like so: equation A = equation B Now you solve for x, I'll assume you know how. If there are absolute values, you'll have to do more work though. Now you found the points of intersection!
Linear
Both the Greatest Integer Function and the Absolute Value Function are considered Piece-Wise Defined Functions. This implies that the function was put together using parts from other functions.