What is the average rate of change of the function over the interval x = 0 to x = 6?

f(x)=2x−13x+5

Enter your answer, as a fraction, in the box.

Find the directions in which the function increases and decreases most rapidly at upper p 0p0. then find the derivatives of the function in these directions. f(x,y)equals=x squared plus xy plus y squaredx2+xy+y2, upper p 0p0left parenthesis 1 comma negative 4 right parenthesis