What does a positive correlation tell you about the graph that compares advertising costs and sales. would the owners of the company be happier if the slope was steeper or flatter?

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