Q9Multiple choiceExercise 3.3
Solve the following pairs of equations:
- (i)x + y = 3.3
- (ii)+ =4 3 4 0.6 5x y = –1, 3x –2y ≠ 0 – =4 3x –2y 6 8 PAIR OF LINEAR EQUATIONS IN TWO VARIABLES 27 6 1 1
- (iii)4x + = 15
- (iv)– = –1 y 2x y 8 1 1 6x – = 14, y ≠ 0 + = 8, x, y 0 y x 2y (v) 43x + 67y = – 24 (vi) + =a+b x y 67x + 43y = 24 2 + 2 = 2, a, b 0 a b 2 xy 3 (vii) = x+ y 2 xy −3 = , x + y ≠ 0, 2x – y ≠ 0 2 x – y 10 x y x y
Show answer
(i) x + y = 3.3
(ii) + =4 3 4 0.6 5x y = –1, 3x –2y ≠ 0 – =4 3x –2y 6 8 PAIR OF LINEAR EQUATIONS IN TWO VARIABLES 27 6 1 1
(iii) 4x + = 15
(iv) – = –1 y 2x y 8 1 1 6x – = 14, y ≠ 0 + = 8, x, y 0 y x 2y (v) 43x + 67y = – 24 (vi) + =a+b x y 67x + 43y = 24 2 + 2 = 2, a, b 0 a b 2 xy 3 (vii) = x+ y 2 xy −3 = , x + y ≠ 0, 2x – y ≠ 0 2 x – y 10 x y x y