Question

What is maximum value of f(x,y)=3x+3y. Using the following inequalities. X>=0. Y>=0. 3x+2y<=18 6x+7y<=42

Answer 1

draw lines 3x+2y=18
and 6x+7y=42
\[x \ge0, y \ge0~ gives~ graph~ lies~infirst~quadrant.\]

Answer 2

We have graphed the equation. And worked it out with the answer 18. That's not the right answer.

Answer 3

3x+2y=18
x=0,y=9,y=0, x=6
6x+7y=42
x=0,y=6,y=0,x=7

Answer 4

i think at E,f=3*14/3+3*2=14+6=20
but you need to show at all four points.

Answer 5

Yes finally! Thank you so much.

Answer 6

yw