Question

can you guys give a real life example of an equation of a line through two points.

Answer 1

I can't think of anything.

Answer 2

Would a train stopping at stations work?

Answer 3

Sure. Price to have CDs pressed or t-shirts printed is a flat setup charge, plus a fixed price per item. That setup charge is the value of the y-intercept, and the fixed price per item is the slope.

Answer 4

So would it be better to use an answer more like yours or mine, or it doesn't matter

Answer 5

If the train doesn't spend any time at the stations, then yes, you could look at the distance traveled vs. time. Perhaps the train passing various mileposts would be a safer example (the train doesn't normally stop at a milepost). If the train stops at the station, we don't have a straight line for the distance vs. time relationship, because some time passes at the station without the train moving.

I'm just giving examples, you're on your own for deciding how to best answer your question!

Answer 6

Alright i see what you mean, that's a good idea about the mile posts, thank you!

Answer 7

or mile markers along the side of the road...