X Axis and Y Axis

X Axis and Y Axis

You may use the term 'X axis' instead of 'horizontal axis' and 'Y axis' instead of 'vertical axis'. However, the terms 'vertical axis' and 'horizontal axis' are there to help you learn the key terms. Therefore, I would only recommend using the terms 'Y axis' and 'X axis' when you are more advanced in APDD, and are more comfortable and knowing with / of the key terms.