Question

If y=14 when x=8 determine the value of y when x =12

Answer 1

With this information there could be several answers.
14 = 8 +6  so the equation could be y=x+6, which would give us 18.
But  also, 14 = 8/2 +10, so the equation could also be y= x/2+10, which would give us 16.

You could get several answers