00:02
Okay, so maybe we have a family gathering or a picnic and we're keeping tabs on how many hot dogs and how many buns are used.
00:12
And so we have this table of values.
00:15
And what we're going to do is find the slope between points 1 and 2, 2 and 3 and 3 and 4 and see if we get the same slope each time.
00:23
And if we do, then we can say that the rate of change is a constant.
00:27
So using our slope formula, which is change in y over change in x, i'm going to start with points 1 and 2.
00:37
So the change in y, where y is the buns and x is the hot dogs, would be 2 minus 1, over the change in x would be 2 minus 1.
00:47
So we get 1 over 1, which is 1...