Question

the rule (x,y) to (-x,y) means: *
rotate 90 degrees
transform units to the left
reflect on y - axis
reflect on x - axis

Explanation:

In a coordinate - plane, when we change the sign of the x - coordinate of a point (x, y) to get (-x, y), we are flipping the point across the y - axis. A 90 - degree rotation changes both the x and y coordinates in a different way. Transforming units to the left changes the x - coordinate by subtracting a value from it. Reflecting on the x - axis changes the sign of the y - coordinate.

Answer:

reflect on y - axis