What is eight times negative six

Which of the following transformations does not preserve congruence? * 5 points a. (x, y) → (y − 3, x − 3) b. (x, y) → (x + 5, y − 1) c. (x, y) → (y + 9, −x + 2) d. (x, y) → (3x + 1, 3y − 2)

If f(x)= 3x+6 which of the following is the inverse of f(x)

Prove that quadrilateral is a rhombus.