For all math, iq cells, or any lurkers with brain a math word problem

[TiredofTalking]

Math word problems have always been a problem for me in algebra classes. Any boys and everybody (hell even some foid whores on internet from Reddit) listen up:
We are working at packaging facility taping top of boxes with machine. The radius (or usable side length of tape at beginning of roll is 5 inches. If you take the radius at time interval of let’s say 2 hours, and let’s say it’s 3.2 inches, would that be enough to determine an estimate for how long the roll will last. Or would you need two points.
Would you use y=mx+b or is this some other formula.
Would it be a downward slope setup on a graph. There’s multiple ways to graph it and you could change the variable around (y or x) correct. How would you go about it?

 

[TiredofTalking]

Like amount of time left on x and tape rolling length at y. Or some other setup. And that would be a negative slope correct? A rate at which you lose tape.

 

[TiredofTalking]

You could make a rate with just this info, but it would be innacurate because you could find slope if you have two points

 

[Xul]

@Horatio Alger

 

[TiredofTalking]

 

[TiredofTalking]

Somebody answered the question then deleted. But their answer suited me thanks haha. Was something like if machine and box rate are consistent it would be downward linear.

 

[TiredofTalking]

The next part would be if two machines were running how would that affect the formula and how you would graph it? Same size of roll or also: if one roll started shorter