Practice set 5.1
(1) By using variables x and y form any five linear equations in two variables.
(2) Write five solutions of the equation x + y = 7.
(3) Solve the following sets of simultaneous equations.
V x + y = 4; 2x-- 5y = 1
it 2x + y = 5; 3x-y = 5
(iii) 3x - 5y=16; x-3y=8
(iv) 2y - x=0; 10x + 15y = 105
(v) 2x + 3y+4 = 0; x- 5y = 11 (vi) 2x - 7y = 7; 3x + y = 22
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Answer:
2x +2y=4;3x+6y=9;3x-5y=6; 6x+2y=4;4y-6x=8
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