Multi-part: analytical geometry

In the diagram, K(1; 0), L(4; −3) and M(7; 0) are points on the Cartesian plane, with M the midpoint of KL.

In the diagram, R(0; −2), S(2; −4) and T(4; −2) are points on the Cartesian plane, with M the midpoint of RS.

In the diagram, K(−2; −1), L(0; −3) and M(2; −1) are points on the Cartesian plane, with M the midpoint of KL.

In the diagram, A(−3; −2), B(0; −5) and C(3; −2) are points on the Cartesian plane, with M the midpoint of AB.

In the diagram, P(0; −4), Q(3; −1) and R(0; 2) are points on the Cartesian plane, with M the midpoint of PQ.

In the diagram, A(−1; 2), B(1; 0) and C(4; 3) are points on the Cartesian plane, with M the midpoint of AB.

In the diagram, D(0; 0), E(2; −6) and F(8; −4) are points on the Cartesian plane, with M the midpoint of DE.

In the diagram, X(0; 1), Y(4; −5) and Z(10; −1) are points on the Cartesian plane, with M the midpoint of XY.

In the diagram, D(−2; 2), E(0; 8) and F(−6; 10) are points on the Cartesian plane, with M the midpoint of DE.

In the diagram, X(−4; −3), Y(−2; −5) and Z(0; −3) are points on the Cartesian plane, with M the midpoint of XY.

In the diagram, D(−2; −4), E(2; 2) and F(−4; 6) are points on the Cartesian plane, with M the midpoint of DE.

In the diagram, A(−1; −3), B(2; −9) and C(6; −7) are points on the Cartesian plane, with M the midpoint of AB.