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Most linear equations are functions (that is, for every value of x, there is only one corresponding value of y). When you assign a value to the independent variable, x, you can compute the value of the dependent variable, y. You can then plot the points named by each (x,y) pair on a coordinate grid.
Steps to Solve a Linear Programming Problem. 1  1.Select the unknowns. 2  2.Determine the objective function. 3  3.Write the constraints as a system of inequalities.  4. Determine the set of feasible solutions that graphically represent the 1  constraints. 5. Find the coordinates of the vertices from the area of feasible solutions.