Question

How are the function y=2x and y=2x-3 related

Answer 1

Each output for y=2x-3 is three less than the corresponding output for y=2x. The graph of y=2x-3 is the graph of y=2x translated down three units

Explanation:

After you put it on a graph, the answer is pretty self-explanatory.

Answer 2

I have no idea what the other dude was saying but the answer should be because they have the same slope of 2

Hope this helps.