The pair of equations y = 0 and y = -7 has : A. infinitely many solutions B. two solutions C. one solution D. no solution

Asked by Manisha Nayak | 24th Sep, 2012, 06:38: PM

Expert Answer:

The equation of the line y = 0 is x-axis itself and the equation of the line y = ?7 is parallel to x-axis at a 7 units below it which are shown on a graph as shown below.

 

 

Since, these lines are parallel so, they have no common solution.

Therefore, the correct answer is D.

Answered by  | 24th Sep, 2012, 09:32: PM

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