00:01
Our problem is asking us to come up with an equation that satisfies these two functions, and it doesn't look like we're given very useful information here unless you recognize a couple things.
00:13
The first thing is that this number is an x value, and this number is a y value.
00:24
Same with this one.
00:26
There's your next value, there's a y value.
00:30
So if you look at these as an ordered pair, this is really written as 0 .1 ,11 .5.
00:43
And this one is written as 0 .4, 0 .9 .9.
00:53
And so at that point, all we want to do is find the equation of the line passing through these two ordered pairs, which is what we've been doing earlier.
01:02
So it's the same kind of question, just looks kind of scary.
01:06
So we use the slope formula, which is y2 minus y1 on top.
01:13
So we're going to go 11 .5.
01:19
We're going to subtract from that.
01:21
The other value, which is going to be 5 .9 of the negative variety.
01:25
So there's that part.
01:29
And on the bottom, we're going to do the same thing.
01:32
So 0 .1 on the bottom minus 0 .4...