Algebra 2 Matrices

Question

Find the coordinates of the vertices of the rectangle

WXYZ with coordinates W (3,−6), X (9,−3) , Y (11,−2), Z (−12,3)

after a dilation with a scale factor of 5. Write the answer

as a matrix.

Answer 1

5 * [ 3 -6]

[ 9 -3]

[ 11 -2]

[-12 3]

= W' (15, -30), X' ( 45, -15), Y' ( 55, -10), Z'( -60, 15)

[ 15 -30 ]

[ 45 -15]

[55 -10]

[-60 15]