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# Given the objective function f(x,y)=5x-2y and the vertices W(3,4),X(-6,8), Y(7,-3) and Z(2,-10), which point gives the maximum value of func?

* Y

* Z

* W

* X

### 2 Answers

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- stanschimLv 74 weeks agoFavourite answer
Linear programming theory says that optimal values for the objective function must occur at the vertices of the feasible region.

f(3,4) = 5(3) - 2(4) = 15 - 8 = 7

f(-6,8) = 5(-6) - 2(8) = -30 - 16 = -46

f(7,-3) = 5(7) - 2(-3) = 35 + 6 = 41

f(2,-10) = 5(2) - 2(-10) = 10 + 20 = 30

Looks like (7,-3) gives the maximum value which is point Y.

- TomVLv 74 weeks ago
f(W) = f(3, 4) = 5(3) - 2(4) = 15-8 = 7

f(X) = f(-6, 8) = 5(-6) - 2(8) = -30 - 16 = -46

f(Y) = f(7, -3) = 5(7) - 2(-3) = 35 + 6 = 41

f(Z) = f(2, -10) = 5(2) - 2(-10) = 10 + 20 = 30

f(Y) = 41 is the maximum value over the given vertices.

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