00:02
In 2005, the monorail charged $2 per ride and had an average ridership of $27 ,000, so i have that here.
00:10
And in december of 2000, they changed the price to $4, and there's our ridership.
00:16
We want to get the demand equation.
00:18
So we want to look at this as two ordered pairs, and then we can get the equation in the form y equals mx plus b.
00:29
So the first thing we want to do is find our slope.
00:32
So i want to subtract my y's, that's going to be 10 ,000.
00:36
I want to subtract my x, that's going to be negative 2.
00:39
So my slope is going to be 10 ,000 over negative 2 or negative 5 ,000.
00:45
So i have y equals negative 5 ,000, x plus b.
00:52
Now i need to find the value of b.
00:54
And to do that, i'm going to substitute these values for x and y.
00:58
So 27 ,000, and then i want to have 2 for x.
01:02
So that's going to be 27 ,000 equals negative 5 ,000 times 2 plus b...