How to Graph an Absolute Solution
- 1). Plug positive and negative values in for x to create a table of values for f(x). Also plug in 0. Given the function f(x) = |x|, for instance, plug the values -3, -2, -1, 0, 1, 2 and 3.
[x, f(x)]
-3, 3
-2, 2
-1, 1
0, 0
1, 1
2, 2
3, 3 - 2). Plot the points from the table of values on your graph.
- 3). Connect the points by drawing two lines. Given f(x) = |x|, f(x) = 0 when x = 0. Since the f(x) value 0 corresponds to only one value for x, the point (0, 0) is therefore the vertex of this absolute function.
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