Grade 12Analytical Geometry
If 2a+b+2c=0, then the family of lines ax+by+c=0 is concurrent at
1 Answer
Vikas TU
Make ax+by+c=0 similar to 2a + b + 2c = 0
therfore multiply ax+by+c=0 by 2
.i.e.
2ax + 2by + 2c = 0
Now compare it with the coeff. of
2a+b+2c=0
we get,
x = 1
y = ½
thus at this point it is concurrent.
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