How do you graph $y = | x^2 - 1 |$ ?

Question

1949 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-06-12T03:42:00

See graph.

First consider the graph of $x^2-1$

graph{x^2 -1 [-10, 10, -5, 5]}

Now the absolute value of that same function, just switch all the negative results to positive:

graph{y = | x^2 - 1 | [-10, 10, -5, 5]}

How do you graph y = | x^2 - 1 |y = | x^2 - 1 |?