Is this a function? explain your reasoning.

please help me !

Need on this one asap im almost done with this subject

Which shows the correct lengths of side c in both scales? scale 1: 45 m; scale 2: 60 m scale 1: 60 m; scale 2: 45 m scale 1: 36 m; scale 2: 27 m scale 1: 27 m; scale 2: 36 m mark this and return save and exit

How to write four times a number,minus 6,is equal to theee times the number+8 as an equqtion