Solve 4x - 12 ≥ 0 graphically in two dimensional plane
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Solution
Graph of 4x - 12 ≥ 0 is given in the fig We select a point say (0, 0) and substituting it in given inequality we see that 4(0) - 12 ≥ 0 or -12 ≥ 0 which is false Thus the solution region is the shaded region on the right hand side of the line x = 3