00:01
Okay, so we're looking at this model here.
00:05
We want to figure out exponential regression, okay, and a linear regression, and then look at which one's the better fit.
00:12
And it looks like you already got that one is the linear function.
00:15
But let's talk about how to find these.
00:17
Best bet is using a graphing utility.
00:19
I prefer desmos.
00:21
So i'm going to go ahead and switch it over to that screen so you can see what my desmos looks like.
00:27
So right here.
00:29
Let's change that to the easier to see.
00:33
So i was able to plug in a table like x1 and y1 here by clicking the plus sign here and tables the third option down.
00:42
After that, you're just typing your information for x and y.
00:46
Here's the first one.
00:47
This is my function for that is in exponential here.
00:51
And it almost looks like a straight line that just passes through.
00:53
There's not a lot going on with that one.
00:56
But i will write that down still.
00:57
So i wrote it as a, which in this case is the parameter 729.
01:04
8 multiplied by the b value, which is 1 .00913 raised to the x power.
01:14
Okay...