A period on the periodic table is a horizontal row. The atoms in this row show a trend in their width, and in the amount of work needed to make them an ion, among the fe â¦ w other similarities.
The x-axis and y-axis Remembered! The x-axis and y-axis are two lines that create the coordinate plane. The x-axis is a horizontal line and the y-axis is a vertical line. I'm sure you've heard that a million times, but it might hard for you to remember which one is which. Here is a little trick to help you remember...
On a graph, the x-coordinate is the number where the point/line is horizontally (left and right) at a specific time. It's what a coordinate becomes when it's divorced. The horizontal, laditudal distance. Think of it as the left and right coordinate. The y is the up and down one.