Which of the following is not a linear equation (a) 2x + 5 = 1 (b) x – 1 = 0 (c) y + 1 = 0 (d) 5x + 3

A pair of linear equations which has a unique solution x = 2, y = –3 is

a) x – 4y –14 = 0

5x – y – 13 = 0

b) 2x – y = 1

3x + 2y = 0

c) x + y = –1

2x – 3y = –5

d) 2x + 5y = –11

4x + 10y = –22

Step-by-step explanation:

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