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the image coordinates of the vertex after the full transformation (horizontal stretch with scale factor 4, enlargement with scale factor 2, rotation of counter-clockwise about the origin).
[3]Compute the determinant of the matrix and its geometric meaning.
[3]Write down the matrix that represents a horizontal stretch by a factor of 4 in the plane.
[1]the combined transformation matrix for first applying a horizontal stretch by 4 and then an enlargement by 2.
[3]the area of the quadrilateral with vertices , , and using the determinant method.
[4]why the rotation by anticlockwise does not change the absolute value of the determinant of the preceding transformation.
[3]Write down the matrix representing an enlargement (scaling) with scale factor 2 about the origin.
[1]A quadrilateral has an area of . It is transformed by the matrix
to form an image .
the determinant of and the area of .
[3]Matrices and transformations.
Write down the matrix for a rotation of counterclockwise about the origin.
[1]Find the coordinates of the image of the point under the horizontal stretch by factor 4.
[2]Find the combined transformation matrix for a horizontal stretch by 4, then an enlargement by a scale factor of 2, followed by a counter-clockwise rotation about the origin.
[4]Compute the area of the quadrilateral after applying the horizontal stretch by factor to the vertices , , , .
[3]