Question

If you make a new function g by taking function f and translate it down 15 units , what Is gs equation?

Answer 1

The minus sign means 'down.'

Answer 2

Thanks

Answer 3

Now for the long answer.
For a function of the form y = 'stuff,' down is in the negative y direction, so regardless of what the 'stuff' is, if you subtract 15 from it, all the Y coordinates will be translated down 15 units.