Problema Solution
Which transformation or combination of transformations can be used to show that quadrilateral JKLM with vertices J(8, 4), K(4, 10), L(12, 12), and M(14, 10) is congruent to quadrilateral WXYZ with vertices W(8, -4), X(4, -10), Y(12, -12), and Z(14, -10)?
Answer provided by our tutors
The transformation is a reflection because all the numbers are exactly the same, except the y values are all negatives.
It indicates the shape was reflected across the x-axis or across the line y = 0.
Reflection in the x-axis:
Multiply y-coordinate by -1:
(x, y) -> (x, (-1)*y) or
(x, y) -> (x, -y)