See attachment file below.
Essentially, you can always tell a thing's position by 3 coordinates. We also say that our world is three-dimentional: it has three dimensions -that's why three coordinates are needed. If something is on a flat surface, you know its one coordinate (all points on the same surface have the same coordinate) so you only need two more (you can call them vertical and horizontal)
A function is a expression that defines a relationship between one variable and another variable
Answer:
<h2>3Q + 2p</h2>
Step-by-step explanation: