Does anyone know the answer? -9x+1=80 and -2=2+v/4

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)

When only separate discreet points are graphed it is called?

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?