Question

Why use x-axis and y-axis in the graph why do not use another word

Answer 1

Choose your x and y carefully. Scientists like to say that the “independent” variable goes on the x-axis (the bottom, horizontal one) and the “dependent” variable goes on the y-axis (the left side, vertical one).

Answer 2

Because the y axis and x axis meant the two axis in the graph the other words won't