Fewpal
+1 vote
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in JEE by (179 points)
edited by
a) 5<a<7

b)a=7

c)a=11

d)a>7
by (64.2k points)
where is 'a' in the question
by (179 points)
Sorry, the equation is
3x-4y+a=0
by (64.2k points)
please edit your question
by (179 points)
The question is edited!

1 Answer

+3 votes
by (64.2k points)
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Best answer

Solution:

We have given that point let A(1,2) and point B(3,4) and

the equation is 3x-4y+a = 0

putting both values of A and B in LHS of equation, we get

3*1-4*2+a = 0 --------(1)

a = 5

3*3-4*4+a = 0 ------------(2)

a = 7

From both equation we get the values of a

a =5 and a= 7

So the correct answer is (b)

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