Tell weather or not porportional. 4/7 and 24/47

Choose the correct slope of the line that passes through the points (1, -3) and (3, -5)

Labc is reflected across x = 1 and y = -3. what are the coordinates of the reflection image of a after both reflections?

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?