The rental fee to rent a trench digger is represented in the equation y = 25x, where y represents the total rental fee, and x represents the number of hours the digger is rented. What is the constant of proportionality between the total rental fee and the number of hours a digger is rented?

The image of abc is a'b'c. what transformations would result in this image? abc is reflected over the line x = 1, then is rotated -90° around the origin. abc is reflected over the line y = x - 1, then t: (x, y) → (x - 1, y - 1). abc is rotated 90° around the origin, then is reflected over the y-axis. abc is rotated -90° around the origin, then is reflected over the line y = -1.