Step-by-step explanation
two important rules to plot a point in the cartesian plane are given
1.The first coordinate in the ordered pair (x) represents the left/right movement of a point from the origin.
2.The second coordinate in the ordered pair (y) represents the up/down movement of the point from the origin.
so
Step 1
let

so
1) 2.75 to the left
2) 3 up
Step 2
B(1,-2)
I hope this helps you