Which graph does not represent a function?
ਦੀ

D

Step-by-step explanation:

D is the no function graph because the x repeat, if x repeats it means it's not a function and in this graph it's the same x for every y.

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,