Iam confused on how to add fractions and simplifying me . if this i am on gomath unit 2 adding and subtracting fractions, also multiplying. 4.2 independent , you.

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)

Given f(x) = 2x^2- 5x+1, determine the function value f(2). do not f(x) = in your answer

Two lines parallel to a third line are parallel to each other. always sometimes or never