00:01
So let's take a look at the first question right here.
00:02
So the first part asks the x intercepts, and we can only tell this visually.
00:08
Those are negative 2, 1, and 4.
00:10
So part b asks if it's a cubic or a quardic function.
00:15
So since the graph has 3 intercepts, x intercepts, before it runs off to negative infinity or infinity, and there is one hill and one valley, we know that it's a degree 3, 2bic equation.
00:32
Now, for part three, in order to determine the answer, let's look at the limits of the function as x approaches infinity and negative infinity.
00:41
So as x increases to infinity, the function decreases all the way to negative infinity.
00:47
And in the reverse, as x approaches negative infinity, as x decreases, the function becomes much larger to infinity.
00:59
So that means that the leading coefficient sign is negative...