Which of the following equation does not represent a pair of lines ?

Which of the following pairs does not represent a pair of isomers?

Which of the following equations represent pair of lines ? xy + x + y + 1 = 0

Which of the following equation does not represent a simple harmonic motion

Which of the following equation does not represent a simple harmonic motion

Which of the following equations represent pair of lines ? 2x^2 - 6y^2 + 3x + y + 1 = 0

Which of the following equations represent pair of lines ? 10x^2 - xy - 6y^2 - x + 5y - 1 = 0

When graphed in the standard (x, y) coordinate plane, which of the following equations does NOT represent a line?

Which of the following equation does not represent the progressive wave -

Which of the following equations represents a pair of real and coincident straight lines?

Which of the following equations represents a pair of real and coincident straight lines?