The graph of the square function is also called a parabola. Its domain is the set of all real numbers. The range is the set of all real numbers greater than or equal to zero.

It is an even function and is decreasing on the interval from negative infinity to zero, and increasing on the interval from zero to positive infinity.

The graph intersects the x-axis and y-axis at (0,0).

Important anchor point coordinates are: (-1,1) (0,0) and (1,1).

You can graph many variations of the square function using transformations. Check out an example that applies several transformations to the basic square function.