What are the leading coefficient and degree of the polynomial 9-10x^2-2x-15x^4

Leading coefficient = - 15

Degree = highest power on a variable = 4

Step-by-step explanation:

It might be easier to see if you rewrote the polynomial in the order it is normally presented.

Highest power goes on the left.

y = - 15x4 - 10x^2 - 2x + 9

The leading coefficient (-15) is the number in front of the variable with the highest power (x^4 or 4)

The highest power on a variable is the degree.