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Question

Question 2 (i)
Do the following equations represent a pair of coincident lines? Justify your answer.

3x+17y=3 and 7x+3y=7

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Solution

For lines to be coincident,

a1a2=b1b2=c1c2

The given pair of linear equations are:

3x+y73=0

and 7x + 3y – 7 = 0

where a1=3, b1=17, c1=3a2=7, b2=3, c2=7now, a1a2=37,b1b2=121,c1c2=37

Here, a1a2b1b2

Thus, the given pair of equations does not represent coincident lines.


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