#Grade 10 CBSE problem
rich wharfBOT
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sonic raptor
What have you tried?
cloud bridge
so since it has infinite solutions
i did a1/a2 = b1/b2 = c1/c2
i solved the first two fractions
and got a = 5b
sonic raptor
What?
cloud bridge
do you know the curiculum?
sonic raptor
...no, obviously not, because I'm not your classmate.
cloud bridge
ok then u wouldn't know
sonic raptor
Just because I don't know "the curriculum", i.e. what you specifically, personally have been taught, doesn't mean I don't know how to solve the problem.
cloud bridge
oh ok
sonic raptor
What I don't understand is what you have done and why.
cloud bridge
ill try to explain what those values in the fraction are
and then u can solve it
so lets take 2x + 3y = 7 and 6x + 9y = 21
sonic raptor
6x + 9y = 21?
sonic raptor
Why don't we use the example we have?
cloud bridge
ok fine'
2x + 3y = 7
(a-b)x + (a+b)y = 3a + b - 2
in an equation with two variables
it is ax + by = c
since there is 2 equation
sonic raptor
Wait, hold on.
Okay.
I think using a, b, and c in this way is going to be unnecessarily confusing.
cloud bridge
but like it is the general form of a linear equation
sonic raptor
No it very much is not.
cloud bridge
linear equation not quadratic
my bad
anyway
so if its a pair
the equations will be represented like this
sonic raptor
Okay...
cloud bridge
now you compare a1 and a2
so a1/a2
do the same for other values
so in the question i gave
a1 is 2 and b1 is (a-b)
so it will be 2/(a-b)
sonic raptor
a1 is 2 and b1 is (a-b)
...I don't think so.
Okay, I wonder at this stage if you understand conceptually what's happening here.
cloud bridge
i do
because this is what is there in grade 10
can i give u a picture to explain this concept
sonic raptor
Do you understand what "coincident lines" means?
sonic raptor
Which actually means the two equations are describing the same line.
cloud bridge
Find values of a and b if the equations have infinite solutions.
2x + 3y = 7
(a-b)x + (a+b)y = 3a + b - 2
here u go
sonic raptor
...yes, that's the problem.
cloud bridge
now solve a1/a2 = b1/b2
sonic raptor
...we're not here to do your homework for you.
We're here to help you do your homework.
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