Question

In which quadrant or on which axis would you find the point (4,0)?

Answer 1

`(4,0)` is on the (positive) X-axis

Explanation:

A point is on the X-axis if and only if the `y` component of its coordinate is equal to `0`. That is `y=0` for all points on the X-axis and is only equal to `0` for points on the X-axis.

For a point on the X-axis the point is
`color(white)("XXX")`on the positive X-axis if the `x` component is `> 0`
`color(white)("XXX")`on the negative X-axis if the `x` component is `< 0`
`color(white)("XXX")`at the origin if the `x` component is `= 0`