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A square on a coordinate plane is translated 9 units down and 1 unit to the right. Which function rule describes the translation?

A. [tex]\( T_{1,-9}(x, y) \)[/tex]
B. [tex]\( T_{-1,-9}(x, y) \)[/tex]
C. [tex]\( T_{-9,1}(x, y) \)[/tex]
D. [tex]\( T_{-9,-1}(x, y) \)[/tex]

Sagot :

To determine the correct function rule for translating a square on a coordinate plane, we need to consider the effect of the translation on the coordinates of any point [tex]\((x, y)\)[/tex] on the square.

When a figure is translated:
- Horizontally by [tex]\( h \)[/tex] units, each [tex]\( x \)[/tex]-coordinate of the points on the figure is adjusted by adding [tex]\( h \)[/tex].
- Vertically by [tex]\( k \)[/tex] units, each [tex]\( y \)[/tex]-coordinate of the points on the figure is adjusted by adding [tex]\( k \)[/tex].

The general translation function rule can be expressed as [tex]\( T_{h, k}(x, y) \)[/tex], where:
- [tex]\( h \)[/tex] represents the horizontal translation.
- [tex]\( k \)[/tex] represents the vertical translation.

For this specific problem:
1. The square is translated 1 unit to the right.
- Moving to the right corresponds to a positive horizontal translation. Hence, [tex]\( h = 1 \)[/tex].

2. The square is translated 9 units down.
- Moving downward corresponds to a negative vertical translation. Hence, [tex]\( k = -9 \)[/tex].

Therefore, the function rule that describes this translation is [tex]\( T_{1, -9}(x, y) \)[/tex].

To summarize, the correct function rule is:
[tex]\[ T_{1, -9}(x, y) \][/tex]