And one thing you might notice is that the curve is kind of that the right side of the curve looks like the left side of this curve, that whatever the positive X values we take on the same f(x) values for negatives x value and that's because in our function definition whatever our input is, we squared, so whether we start with positive 2 or negative 2, when you square you get the same value whether you start with positive 1 or negative 1, you square you get the same value and that's why f(2) is equal to f(-2) and for all, and for, really any other number f(1) is equal to f(-1)