00:01
We're looking at the relationship between celsius and fahrenheit.
00:07
And, oops, let's make sure we spell celsius correctly.
00:12
Celsius and fahrenheit.
00:18
So celsius, we know a couple of different things.
00:23
When celsius is zero degrees, fahrenheit is 32 degrees.
00:29
That's freezing.
00:30
And when celsius is 100 degrees, fahrenheit is, is 212 degrees.
00:36
That's for boiling.
00:38
So using these two relationships, let's come up with an equation that we could use.
00:45
So what we're going to do is look at the change in the fahrenheit over the change in the celsius.
00:51
So change in f over change in c.
00:55
So that's equal to 212 minus 32 over 100 minus 0.
01:02
And we get 180 over 100.
01:08
And that simplifies to 9 over 5.
01:12
Well, we already know what the intercept is based off of the first relationships, 0 degrees celsius, 32 degrees fahrenheit.
01:21
So we can actually set up our equation really nicely now.
01:24
Fahrenheit is equal to this change, nine -fifths, every degree of celsius plus 32.
01:36
Because when celsius is zero, the fahrenheit has to equal 32.
01:40
So here's our equation.
01:42
I'll kind of put this in the green box.
01:43
We're going to use this a bunch...