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Chapter 3

Across
When the graph of a system of constraints is a polygonal region
When a system of linear equations has exactly one solution
A system of equations that has no solution
To seek the optimal price or amount that is desired to minimize costs or maximize profits
The point at which the income equals the cost
When a system of linear equations has an infinite number of solutions
A set of inequalities with the same variable
Eliminate one of the variables in a system of equations by adding or subtracting the equations
The process of finding the maximum or minimum values of a function for a region defined by inequalities
The coordinates of a point in space(x,y,z)
Down
Conditions given to variables , often expressed as linear inequalities
A system of equations that has at least one solution
A system of inequalities that forms a region that is open
The intersection the graphs in a system of constraints
A method of solving a system of equations in which one equation is solved for one variable in terms of the other
A set of equations with the same variables