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A rectangle on a coordinate plane is translated 5 units up and 3 units to the left. Which rule describes the translation?

A. \((x, y) \rightarrow (x + 5, y - 3)\)

B. \((x, y) \rightarrow (x + 5, y + 3)\)

C. \((x, y) \rightarrow (x - 3, y + 5)\)

D. [tex]\((x, y) \rightarrow (x + 3, y + 5)\)[/tex]

Sagot :

To determine the rule that describes the translation of a rectangle on a coordinate plane, we need to consider the effects of translating the rectangle 5 units up and 3 units to the left.

1. Translation 5 units up: When an object is translated upwards on a coordinate plane, its y-coordinate increases by the number of units it is moved. This means we need to add 5 to the y-coordinate of every point on the rectangle.

2. Translation 3 units to the left: When an object is translated to the left on a coordinate plane, its x-coordinate decreases by the number of units it is moved. This means we need to subtract 3 from the x-coordinate of every point on the rectangle.

Therefore, to find the new coordinates \((x', y')\) of a point \((x, y)\) after translating it 5 units up and 3 units to the left, we apply these transformations:
- New x-coordinate: \( x' = x - 3 \)
- New y-coordinate: \( y' = y + 5 \)

Thus, the rule that describes the translation can be written as:
[tex]\[ (x, y) \rightarrow (x - 3, y + 5) \][/tex]

Examining the given options:
- \((x, y) \rightarrow (x + 5, y - 3)\)
- \((x, y) \rightarrow (x + 5, y + 3)\)
- \((x, y) \rightarrow (x - 3, y + 5)\)
- \((x, y) \rightarrow (x + 3, y + 5)\)

The correct rule matches:
[tex]\[ (x, y) \rightarrow (x - 3, y + 5) \][/tex]

So, the rule that describes the translation of the rectangle 5 units up and 3 units to the left is:
[tex]\[ \boxed{(x, y) \rightarrow (x - 3, y + 5)} \][/tex]