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



Answer :

To determine the translated coordinates of a point \((x, y)\) when using the translation rule \( T_{-8, 4} \), we need to understand what \( T_{-8, 4} \) means.

The rule \( T_{-8, 4} \) indicates a translation where we subtract 8 from the x-coordinate and add 4 to the y-coordinate.

Here's a step-by-step guide to interpreting this:

1. Translation in the x-direction:
- The translation rule requires us to move every point 8 units to the left. Mathematically, this means we subtract 8 from the x-coordinate.
- If the original x-coordinate is \(x\), the new x-coordinate becomes \(x - 8\).

2. Translation in the y-direction:
- The translation rule requires us to move every point 4 units up. Mathematically, this means we add 4 to the y-coordinate.
- If the original y-coordinate is \(y\), the new y-coordinate becomes \(y + 4\).

Combining these two changes:

- The original point \((x, y)\) gets translated to \((x - 8, y + 4)\).

Thus, another way to express the translation rule \( T_{-8, 4} \) is:

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

From the given options, this matches:

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

So, the correct answer is:

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

Or as given in the choices:

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