There are 2 similar triangles. 1 has coordinates (2,3)(3,4)(2,7). The other has coordinate (7,6) and letter A for the right corner of the base and P for the top.

A has coordinates 1)(9,8)
2)(10,9)
3)(7.5,6.5)

For each case find the scale factor for enlargement, the coordinates of P and the centre of enlargement.

I don't to know how to do them all, I just need 1 explaination so I can do the rest.

Either I do not understand or you have a typo.

I need to know the coordinates of two points in the second triangle or some other second fact about it. You seem to have given me two values for point A