In an integer programming problem, if it is desired to have variable X be exactly twice the value of variable Y, the constraint would be written
A)2X + Y = 0.
B)X + 2Y = 0.
C)2X - Y = 0.
D)X - 2Y = 0.

Question

Quizplus · Accepted Answer

The correct constraint to express that variable X should be exactly twice the value of variable Y is D) X - 2Y = 0. This equation rearranges to X = 2Y, directly stating that X is twice Y.

In an Integer Programming Problem, If It Is Desired to Have