Answer:
B. Four units left and one unit up.
Step-by-step explanation:
We have been given that a triangle is translated by using the rule (x,y) to (x-4,y+1). We are asked to describe the translation used to move the figure.
Let us recall translation rules.
[tex]x-a\rightarrow \text{Figure shifted to left by a units}[/tex],
[tex]x+a\rightarrow \text{Figure shifted to right by a units}[/tex],
[tex]y-a\rightarrow \text{Figure shifted downwards by a units}[/tex],
[tex]y+a\rightarrow \text{Figure shifted upwards by a units}[/tex],
Upon looking at the translation rules we can see that the rule (x-4,y+1) means shifting x-coordinates to left by 4 units and and shifting y-coordinates upwards by 1 unit.
Therefore, the option B is the correct choice.
