It tells us that the transformation is (x - 5, y + 3)
Basically what this means is that your graph was shifted 5 units to the left and 3 units up
To have (2, -1) transformed follow these steps:
(2 - 5, -1 + 3)
(-3, 2)
^^^This is your transformed coordinate
Hope this helped!
~Just a girl in love with Shawn Mendes