Question

which of the following has an infinite number of solutions?

Answer 1

observe the 2nd set.
can u simplify 4x+2y = 10 ?

Answer 2

no

Answer 3

ok, take 2 common
u get 2(2x+y)= 10
so 2x+y =5
ok ?

Answer 4

how you get the 5?

Answer 5

dividing both sides by 2.

Answer 6

oh yeah, okay

Answer 7

now observe that the first equation was also the same, right ?
2x+y=5
so any 2 pairs of (x,y) would satisfy both the equations....
hence, the 2nd set has infinitely many solutions....
got it ?

Answer 8

yes , thank you :)

Answer 9

welcome :)