The product of a number and 3 is the sum of the number and 12. What is the number

6

Step-by-step explanation:

3n = n + 12

2n = 12

n = 6

6

Step-by-step explanation:

let the number be x , then

3x = x + 12 ( subtract x from both sides )

2x = 12 ( divide both sides by 2 )

x = 6

That is the number is 6

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value