in the expression -9x-2 x^2+7, what is the coefficient of x
The coefficient of x is -9.
To find the coefficient of x in the expression -9x - 2x^2 + 7, we need to identify the term that contains x and look at the number that multiplies it.
In this case, the term that contains x is -9x. The coefficient is the number that multiplies x, which is -9.
Therefore, the coefficient of x in the expression -9x - 2x^2 + 7 is -9.