00:01
Okay, we have a spread sheet sort of problem where a1 is the original value of the car.
00:08
So i'll just put original dollar sign.
00:11
And b1 is the amount of years to depreciate in value.
00:15
Years to go to zero dollars, right? and so the first question is just how do you find this slope, which is the amount it goes down per year? well, you just take a1 and divide it by b1.
00:27
In other words, you take the total original cost and divide it.
00:30
By the amount of years it takes to get down to zero.
00:34
Except we need to make it negative because remember your slope is negative because the car is depreciating or getting less valuable.
00:42
And now, part b, i honestly think, is a really fancy way to say find the formula or the equation.
00:52
And so we know that this is going to be the slope...