Linear Inequalities: Estimations
Multiple linear inequalities with two unknowns
The two lines given by the equations #-42\cdot x+33\cdot y-489=0# and #-33\cdot x-35\cdot y-545=0# divide the plane into four areas, indicated in the figure below as I, II, III and IV.
Which area is the solution of the following inequalities?
\[-42\cdot x+33\cdot y-489\gt0, \quad -33\cdot x-35\cdot y-545\lt0 \]
Which area is the solution of the following inequalities?
\[-42\cdot x+33\cdot y-489\gt0, \quad -33\cdot x-35\cdot y-545\lt0 \]
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