Linear Inequalities: Estimations
Multiple linear inequalities with two unknowns
The two lines given by the equations #-28\cdot x+40\cdot y-580=0# and #-40\cdot x-16\cdot y-760=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?
\[-28\cdot x+40\cdot y-580\gt0, \quad -40\cdot x-16\cdot y-760\lt0 \]
Which area is the solution of the following inequalities?
\[-28\cdot x+40\cdot y-580\gt0, \quad -40\cdot x-16\cdot y-760\lt0 \]
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