Linear Inequalities: Estimations
Multiple linear inequalities with two unknowns
The two lines given by the equations #-47\cdot x+34\cdot y-427=0# and #-28\cdot x-26\cdot y-622=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?
\[-47\cdot x+34\cdot y-427\lt0, \quad -28\cdot x-26\cdot y-622\gt0 \]

Which area is the solution of the following inequalities?
\[-47\cdot x+34\cdot y-427\lt0, \quad -28\cdot x-26\cdot y-622\gt0 \]
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