Asked by jenika

how many solutions does the system have?
x-2y=6
3x-6y=18
a)1
b)2
c)many
d)none
Answered by Rezu

-2y=6-6
-2y=0
y=0 ans.
Proof:
3*6-6*0=18
18+0=18
18=18
One solution: (6,0).
Answered by jenika
thanks Rezu
Answered by Reiny
If you triple the first equation , you will get the 2nd
so there is only one equation,

and there is an <b>infinite number of solutions.</b>

Rezu gave you only one
here is another (2,2)
and another (0,-3) etc
Answered by jenika
so infinite or just one?
Answered by Reiny
come on!
I already gave you more than one.
How many points lie on a straight line??????
Answered by jenika
omg come down it was just a question!
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