00:01
So for this problem, you're given the graph of y equals f of x, and you're asked to answer the following questions.
00:06
I note that for c, d, e, and f, you got the right answer, so i'm not going to focus on those.
00:11
But you did get an incorrect answer for a through b.
00:15
Now, it looks like you might have gotten just a little bit confused because, let's see here, we have that a function is increasing when, you know, if we take a and b, where a is less than b, and the absolute value or the function at a is less than the value of the function at b, we have the functions increasing.
00:41
It looks like you might have gotten just some of the stuff from when we're looking at a graph of f versus a graph of f prime confused here, because we can see that actually we're increasing from that value of negative 1 all the way up to 1.
00:55
We don't stop increasing at 0.
00:58
So that first interval is from negative 1 to 1.
01:01
And then we can see that we are also increasing over the interval from 4 to 6.
01:12
Then for where we are decreasing, we can see that we are decreasing in this interval between 1 and 4.
01:23
Okay, that's interesting...