Question

write down the equation of X- axis.​

Answer 1

Equation of straight line is very simple y =o. In the entire x axis ,wherever we go, always the y coordinate is zero. If we take any two points on x axis and find equation using two point formula of straight line, then finally we will get y =o. This is the way to show or prove equation of x axis as y =o.

Answer 2

Any equation on the x-axis has y=0. Therefore equation of x-axis is y-0.