17.72 Use Problems
Condition: Build on the plane area of solutions of the system of inequalities. \ [\ left \ {\ begin {array} {c} x^{2}+y^{2} +6 x+2 y+1 <0 \\ 2 y+3 x+8> 0 \ End {array} \ Right. \]
Problems of the Use (Unified state Exam) - Equations and Inequalites in Terms of A Parameter, Solved Both by Algebraic Methods and Geometric One.