Find the End Behavior y=-3-6x^5-9x^8

$y = - 3 - 6 x^{5} - 9 x^{8}$

Step 1

Simplify $- 3 - 6 x^{5} - 9 x^{8}$ .

Move $- 3$ .

$y = - 6 x^{5} - 9 x^{8} - 3$

Reorder $- 6 x^{5}$ and $- 9 x^{8}$ .

$y = - 9 x^{8} - 6 x^{5} - 3$

Step 2

Identify the degree of the function.

Identify the exponents on the variables in each term, and add them together to find the degree of each term.

$- 9 x^{8} \to 8$

$- 6 x^{5} \to 5$

$- 3 \to 0$

The largest exponent is the degree of the polynomial.

$8$

Step 3

Since the degree is even, the ends of the function will point in the same direction.

Even

Step 4

Identify the leading coefficient.

The leading term in a polynomial is the term with the highest degree.

$- 9 x^{8}$

The leading coefficient in a polynomial is the coefficient of the leading term.

$- 9$

Step 5

Since the leading coefficient is negative, the graph falls to the right.

Negative

Step 6

Use the degree of the function, as well as the sign of the leading coefficient to determine the behavior.

1. Even and Positive: Rises to the left and rises to the right.

2. Even and Negative: Falls to the left and falls to the right.

3. Odd and Positive: Falls to the left and rises to the right.

4. Odd and Negative: Rises to the left and falls to the right

Step 7

Determine the behavior.

Falls to the left and falls to the right

Step 8