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...
More specifically, 1  an x-intercept is a point in the equation where the y-value is zero, and. 2  a y-intercept is a point in the equation where the x-value is zero. 3  Find the x-and y-intercepts of 25x2 + 4y2 = 9.ake a closer look, and you'll see that the y-axis is also the line  x = 0. In the same way, the x-axis is also the line  y = 0. Then, algebraically, 1  an x-intercept is a point on the graph where y is zero, and. 2  a y-intercept is a point on the graph where x is zero.