Question
From the choices given below, choose the equation whose graph is given in Fig.
  1. y = x
  2. x + y = 0
  3. y = 2x
  4. 2 + 3y = 7x

[Hint: Clearly, (-1, 1) and (1, -1) satisfy the equation x + y = 0]

Answer

Clearly (-1, 1) and (1, -1) satisfy the equation x + y = 0$\therefore$ The equation whose graph is given is x + y = 0.

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