A Notation for Transformations (VCE SSCE Mathematical Methods): Quizzes

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A notation for transformations
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What condition must hh and kk satisfy for T(x,y)=(ax+h,by+k)T(x, y) = (ax + h, by + k) to be linear?

h=k=0h = k = 0

If T(x,y)=(2x3,5y+1)T(x, y) = (2x - 3, 5y + 1), what is T(4,2)T(4, 2)?

(5,11)(5, 11)

What does reflection in the line y=xy = x do to coordinates?

Swaps xx and yy coordinates

In composition TST \circ S, which transformation is applied first?

SS

Is composition of transformations generally commutative?

No, TSSTT \circ S \neq S \circ T in general

What property does TT1(x,y)T \circ T^{-1}(x, y) have for all (x,y)(x, y)?

TT1(x,y)=(x,y)T \circ T^{-1}(x, y) = (x, y)

What is the inverse of T(x,y)=(2x+4,3y6)T(x, y) = (2x + 4, 3y - 6)?

T1(x,y)=(x42,y+63)T^{-1}(x, y) = (\frac{x-4}{2}, \frac{y+6}{3})

If T(1,2)=(5,8)T(1, 2) = (5, 8) and T(x,y)=(ax+3,by1)T(x, y) = (ax + 3, by - 1), what is aa?

a=2a = 2

What is the maximal domain of transformations T:R2R2T : \mathbb{R}^2 \to \mathbb{R}^2?

R2\mathbb{R}^2

If original domain is [0,3][0, 3] and T(x,y)=(2x,y)T(x, y) = (2x, y), what is the image domain?

[0,6][0, 6]

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