How to tell what m is in a linear equation with more than one pronumeral?

Question

anonymous · Answer

Question is not exact it seems? @HawkCrimson  What do u think?

anonymous · Answer

It's actually a physics question, $$P=nRT \frac{ 1 }{ V }$$ I know it doesn't have a y-intercept, but I'm not sure which pronumeral would be the gradient. My physics teacher said it was nRT, but I'm not sure how to figure this out for other questions.

skullpatrol · Answer

What is a "pronumeral?

anonymous · Answer

what is the standard equation in algebra that you link it with?

anonymous · Answer

@skullpatrol 
A pronumeral is a letter that is used to represent a number (or numeral) in a problem.
For example, the formula for the area of a rectangle is:

Area of a rectangle = length × width

If A represents the area of the rectangle, l represents the length of the rectangle and w represents the width of the rectangle, then we can write the formula for the area of the rectangle as follows:

A = l * w

In this formula, the letters A, l and w are called pronumerals.

anonymous · Answer

I'm linking it with y=mx+b, as it's a linear equation. And I think I've figured it out, the table that goes with it has P as one column and 1/V as the other, which says that nRt would be the gradient.

anonymous · Answer

Exactly! way to go @Dysstopia  :) Good luck!

anonymous · Answer

You seem to be the intelligent student! keep going!

anonymous · Answer

Well, because I have two lines of best fit, I need to find the gradient for both of them (I've done a graph). The first one is 0.35. I just need to find the other and average them.