Question

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Answer 1

The end behavior of a polynomial is decide by the end behavior of the leading term of the polynomial.

Answer 2

Not just the coefficient but the leading term which is -2x^4.
The exponent is an even term and the end behavior will be similar to x^2
Here the coefficient is negative and so the the end behavior will be similar to -x^2

Answer 3

There are two ends: left and right. You will have to say what happens to each end.

Answer 4

x^2 looks like like a U
-x^2 looks like an inverted U.

So left end will be down and the right end will be down.
Answer: Both ends down.

Answer 5

Isn't that what a U and inverted U will look like?

Answer 6

upside down U