Question

point $(a,b)$ is transformed by the rule $(a,b - 4)$. what type of transformation occurred? a translation of 4 units to the left a translation of 4 units down a translation of 4 units up a translation of 4 units to the right

Explanation:

In a coordinate system, for a point \((x,y)\), if the transformation rule is \((x,y - k)\) (\(k>0\)), it means the \(y\) - coordinate (vertical coordinate) is decreased. A decrease in the \(y\) - coordinate corresponds to a downward movement. Here \(k = 4\), so the point \((a,b)\) is moved 4 units down.

Answer:

a translation of 4 units down