4 because you can draw a line horizontally and a line vertically and also two lines diagonally.
D...........................
A function is a law that tells you how to associate inputs (x values) and outputs (y values).
In the case of constant functions, it doesn't matter which input you choose, the ouput must always be the same.
So, a constant function has always the same output (y values) for every input (x values) you feed.
Step-by-step explanation:
so therefore mark jogged 2 36/70km more than his sister