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...
1 This axis is the main horizontal line of the rectangular axis or Cartesian plane. 2  The y-value tells how the point moves either up or down along the y-axis. 3  This axis is the main vertical line of the rectangular axis or Cartesian plane. point in a plane contains two components where order matters! It comes in the form (x,y) where x comes first, and y comes second. 1  The x-value tells how the point moves either to the right or left along the x-axis.