A triangle on a coordinate plane is translated according to the rule [tex]$T_{-8,4}(x, y)$[/tex]. Which is another way to write this rule?

A. [tex]$(x, y) \rightarrow (x+4, y-8)$[/tex]
B. [tex][tex]$(x, y) \rightarrow (x-4, y-8)$[/tex][/tex]
C. [tex]$(x, y) \rightarrow (x-8, y+4)$[/tex]
D. [tex]$(x, y) \rightarrow (x+8, y-4)$[/tex]



Answer :

Let's break down the translation rule [tex]\( T_{-8,4}(x, y) \)[/tex]. This rule indicates that every point [tex]\((x, y)\)[/tex] on the triangle is moved according to the given translation. Specifically, the translation rule means that each [tex]\( x \)[/tex]-coordinate is decreased by 8 units and each [tex]\( y \)[/tex]-coordinate is increased by 4 units.

To formalize this, we can write the translation rule as:
[tex]\[ T_{-8, 4}(x, y) \rightarrow (x - 8, y + 4) \][/tex]

Now, let's examine each given option to see which one matches this rule:

1. [tex]\((x, y) \rightarrow (x + 4, y - 8)\)[/tex]
- This rule increases the [tex]\( x \)[/tex]-coordinate by 4 and decreases the [tex]\( y \)[/tex]-coordinate by 8. This does not match our translation rule.

2. [tex]\((x, y) \rightarrow (x - 4, y - 8)\)[/tex]
- This rule decreases the [tex]\( x \)[/tex]-coordinate by 4 and decreases the [tex]\( y \)[/tex]-coordinate by 8. This does not match our translation rule either.

3. [tex]\((x, y) \rightarrow (x - 8, y + 4)\)[/tex]
- This rule decreases the [tex]\( x \)[/tex]-coordinate by 8 and increases the [tex]\( y \)[/tex]-coordinate by 4. This perfectly matches our translation rule [tex]\( T_{-8, 4}(x, y) \)[/tex].

4. [tex]\((x, y) \rightarrow (x + 8, y - 4)\)[/tex]
- This rule increases the [tex]\( x \)[/tex]-coordinate by 8 and decreases the [tex]\( y \)[/tex]-coordinate by 4. This does not match our translation rule.

Based on the analysis above, the translation rule [tex]\( T_{-8, 4}(x, y) \)[/tex] is correctly represented by:

[tex]\[ (x, y) \rightarrow (x - 8, y + 4) \][/tex]

Thus, the correct option is:
[tex]\[ \boxed{(x, y) \rightarrow (x - 8, y + 4)} \][/tex]