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Which of the following lines is not parallel to the line 3y + 2x +...

Mathematics
JAMB 1982

Which of the following lines is not parallel to the line 3y + 2x + 7 = 0?

  • A. 3y + 2x - 7 = 0
  • B. 9y + 6x + 17 = 0
  • C. 24y + 16x + 19 = 0
  • D. 3y - 2x + 7 = 0
  • E. 15y + 10x - 13 = 0
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Correct Answer: Option D
Explanation

Two lines are said to be parallel if the slope of the two lines are equal.

The equation : \(3y + 2x + 7 = 0\)

\(3y = -2x - 7\)

\(y = \frac{-2}{3} x - \frac{7}{3}\)

\(\frac{\mathrm d y}{\mathrm d x} = - \frac{2}{3}\)

All the options have the same slope except \(3y - 2x + 7 = 0\).


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