Question

A square on a coordinate plane is translated 9 units down and 1 unit to the right. Which function rule describes the translation?

T1, –9(x, y)
T–1, –9(x, y)
T–9, 1(x, y)
T–9, –1(x, y)

Answer 1

T_{1,-9}(x,y) = (x + 1, y - 9)

Right 1 adds 1 to x; down 9 subtracts 9 from y.