Which equation has a graph that is parallel to the graph of 2x - y=-1? A. 2x + y = 8
B. y=-1/2x+3
C. y - 1 = 2(x - 3)
D. y = -2x - 1

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