Which of the following represents a function?

D

Step-by-step explanation:

Hello There!

In order for a relation to be a function the x value cannot repeat

In answer choice  A the x value 3 repeats therefore a cannot be the answer

In answer choice B the x value -1 repeats therefore B cannot be the answer

In answer choice C the x value -1 repeats therefore C cannot be the answer

In answer choice D none of the x values repeat so d is your answer

an

y = 6x -3y -12

y +3y +12 = 6x

=> . x = { 2y / 3 +2 } this is equation of line in terms of x

=> . if line meets the x-axis the co-ordinates of meeting point would be ( x , 0 )

=> . x = 2 ( 0 ) / 3 + 2

=> . x = 2

so, the point is ( 2 , 0 )