Transformations

185.
The grid shows two trapeziums A and B.
x y -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 6 5 4 3 2 1 -1 -2 -3 -4 -5 -6 -7 -8 A B
(a) Describe fully the transformation which maps A onto B.
(a) ......................... [3]
(b) Draw the image of A after a stretch of invariant line x = −2 and stretch factor −3.
(b) See diagram [3]
Paper 2
123.
The diagram shows quadrilaterals A, B and C.
x y 0 -4 -3 -2 -1 1 2 3 4 5 6 7 1 2 3 4 -1 -2 -3 A B C
(a) Describe fully a single transformation that maps:
(i) A onto C,
......................... [2]
(ii) A onto B.
......................... [3]
(b) Reflect B along the line x = 1.
See diagram [2]
(c) Find the coordinates of the image of point (10, 3) after the transformation by the matrix ( 3 5 0 2 5 −1 ) .
(........................., .........................) [2]
Paper 4
125.
The diagram shows polygons D, G and H.
0 -10 -8 -6 -4 -2 2 4 6 8 10 -10 -8 -6 -4 -2 2 4 6 8 10 x y G D H
(a) Describe fully the single transformation that maps:
(i) Polygon D onto polygon G,
......................... [3]
(ii) Polygon D onto polygon H.
......................... [2]
(b) On the grid, draw and label the image:
(i) R, of polygon G, after a reflection in the line x = 0,
(ii) M, of polygon D, after a stretch factor −1.5, with y = −2 invariant.
See diagram [4]
Paper 4
126.
Triangles P, Q and R are shown on the diagram.
x - axis y - axis 0 -8 -7 -6 -5 -4 -3 -2 -1 1 2 3 4 5 1 2 3 4 5 6 -1 -2 -3 -4 P Q R
(a) (i) Describe fully the single transformation H, that maps triangle P onto Q.
......................... [3]
(ii) Describe fully the single transformation K, such that KH(P) = R.
......................... [2]
(iii) (hx + k, y − k) is the image of (x, y) under the transformation KH.
Find the values of h and k.
h = ......................... k = ......................... [3]
(b) The matrix of transformation ( −10 2−1 ) maps triangle P onto U.
Draw and label triangle U.
See diagram [2]
Paper 4
129.
The diagram shows triangles A, B and C.
x y 0 -5 -4 -3 -2 -1 1 2 3 4 5 6 7 1 2 3 4 5 6 7 8 -1 -2 -3 -4 -5 A B C
(a) (i) Plot and label the point T(5, 7) on the grid.
(ii) Rotate the point T through 90° clockwise about the origin. Label the image T'.
(b) Describe fully the single transformation that maps:
(i) Triangle B onto triangle A,
......................... [3]
(ii) Triangle B onto triangle C.
......................... [2]
(c) On the grid, draw the image of:
(i) Triangle B after a reflection in the line y = 2,
(ii) Triangle A after a stretch with scale factor 2 and invariant line the y-axis.
See diagram [4]
Paper 4
131.
The diagram shows triangle ABC.
0 -8 -7 -6 -5 -4 -3 -2 -1 1 2 3 4 5 6 7 8 1 2 3 4 5 6 -1 -2 -3 -3 -4 -5 -6 -7 -8 -9 A B C L K J
(a) A reflection in the line x = −1 maps triangle ABC onto triangle DEF.
Draw and label triangle DEF.
[2]

(b) A shear with factor 2 and invariant line y = 2 maps triangle ABC onto triangle GHI.
Draw and label triangle GHI.
[2]

(c) Describe fully the single transformation which maps triangle ABC onto triangle JKL.
[3]

(d) Triangle JKL is mapped onto triangle MNP. The vertices of triangle MNP are M(−3, −8), N(−3, −4) and P(−5, −4). Find a matrix which fully describes a single transformation which maps triangle JKL onto triangle MNP.
[2]
Paper 4
134.
The diagram shows triangles A, B and C.
x y 0 -4 -2 2 4 6 8 10 12 2 4 6 -2 -4 -6 A B C
(a) Describe fully the single transformation that maps triangle:
(i) A onto C,
......................... [2]
(ii) A onto B.
......................... [3]
(b) On the same grid, draw the image of triangle C after a shear, with invariant line y = 0 and shear factor 2.
See diagram [2]
Paper 4
136.
The diagram shows triangles U, V, W, X.
x y 0 -5 -4 -3 -2 -1 1 2 3 4 5 1 2 3 4 5 6 7 8 9 10 -1 -2 -3 -4 -5 X Y U W
(a) Describe fully the single transformation that maps:
(i) Triangle V onto triangle X,
......................... [2]
(ii) Triangle V onto triangle W,
......................... [3]
(iii) Triangle V onto triangle U.
......................... [3]
(b) On the same grid:
(i) Translate V using the vector ( −3 2 ) and label the image V1,
[2]

(ii) Rotate triangle V through 180° about the point (1, 3) and label the image V2.
[2]

(c) Find the matrix which represents the transformation that maps V onto triangle X.
[2]
Paper 4
137.
The diagram shows triangle A and triangle B.
x y 0 -6 -5 -4 -3 -2 -1 1 2 3 4 5 6 7 1 2 3 4 5 -1 -2 -3 -4 A B
(a) Describe fully the single transformation which maps triangle A onto triangle B.
......................... [2]
(b) Draw the enlargement of triangle A, centre (1, 1), scale factor −2 and label the triangle C.
......................... [2]

(c) Reflect triangle A in the line y = x and label the image D.
[2]

(d) A transformation is represented by the matrix ( 11 01 ) .

(i) Draw the image of triangle A under this transformation. Label the image E.
[2]

(ii) Describe fully the single transformation which maps triangle A onto triangle E.
[3]
Paper 4