The amount of seed needed for a landscaper to cover a lawn is shown in the table. Decide if the relationship between the amount of seed and the area it covers is proportional. Lawn Seed 2
Seed ( oz ) / Area covered ( ft )
1 / 27
2 / 54
3 / 81
4 / 108

To find the extreme values of a function f(x.y) on a curve x-x(t), y y(t), treat f as a function of the single variable t and use the chain rule to find where df/dt is zero. in any other single-variable case, the extreme values of f are then found among the values at the critical points (points where df/dt is zero or fails to exist), and endpoints of the parameter domain. find the absolute maximum and minimum values of the following function on the given curves. use the parametric equations x=2cos t, y 2 sin t functions: curves: i) the semicircle x4,y20 i) the quarter circle x2+y-4, x20, y20 b, g(x,y)=xy

How do you solve a question like this?

What does the sign of the slope tell you about a line?