3. In one linear function, when you subtract each y-coordinate from the x-coordinate,
the difference is 3. If the x-coordinate is
not greater than 10 and the y-coordinate
is a positive whole number, how many
ordered pairs are there?

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