Answer:
Translation Rule
Explanation:
The rule that describes a translation 3 units down is the following:
Translation Rule: (x, y) → (x, y - 3)
In this rule, (x, y) represents the coordinates of a point in the original position, and (x, y - 3) represents the coordinates of the translated point after moving 3 units downward.
For example, if we have a point A with coordinates (2, 5), applying the translation rule would give us the new coordinates for the translated point A':
A' = (2, 5 - 3) = (2, 2)
So, when a point is translated 3 units down using this rule, the y-coordinate of the original point is decreased by 3 to obtain the y-coordinate of the translated point. The x-coordinate remains the same.
It's important to note that the translation rule can be applied to any point, not just (2, 5). The key is to subtract 3 from the y-coordinate to move the point downward by 3 units.