... −1 1), M (2 ; 1) 3.24 A(3; 13 ) 3.8 A(1; 1), B(0; 0), C(1; − 1), D(2; 0) 3.25 M (2 ; − 4) M ( 3; 1) A(1; 1), B(2; 0), C(1; − 1), D(0; 0) 3.26 (x + 2√3 )2 + (y + )2 = √ √ 3.9 H( 3; − 1), I(− 3; 1) 3.27 ... A(−3; 1); D(−1; 3). B(1; − 3). C(3; − 1) A(−2; 0), B(2; 2), C(3; 0), D(−1; − 2) 3.2 A(1; − 1); A(4; 5) √ √ − 2y = 3.18 ( − 1)x ± 3.3 A(4; 3); C(3; − 1) 3.19 3x − 4y + = 3.4 N (0 ; − 4), M (0 ; − 2) N (6 ; ... 1.66 (x; y) = (1 ; 1); (2 ; 2) 1.50 x = 1.67 (x; y) = ( 4; 17 ) 1.51 < x < 1.68 (x; y) = (1 ; ); (3 ; 1) 1.52 x = ∨ x = −1 1.69 (x; y) = ( 1; ) 1.53 S = ( 4; − 3) ∪ (8 ; + ) 1.54 x = 1.55 1.72 (x; y)...