Question

1. solve by graphical method (just put answers here.. draw graph in your book... mention your name also and answer only) 1) x+y=3 ; x-y =4 2) x +y =0 ; 2x - y = 9

Answer 1

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Step-by-step explanation:

Line 1: 2x - y = 1 y = 2x - 1 Substituting x = - 1, 0, 1 in the above ... y = - x2 + 4 x - 2 0 2 - x2 1 0 - 1 y = - x2 + 4 5 4 3 We plot the points ( - 1, ... Hence, the system of equations has only one solution ... Therefore the solution is (2,3) .