Get personalized answers to your unique questions on IDNLearn.com. Our platform offers comprehensive and accurate responses to help you make informed decisions on any topic.

Determine the image of the point [tex][tex]$(5,-2)$[/tex][/tex] under a rotation of [tex][tex]$90^{\circ}$[/tex][/tex] about the origin.

A. [tex][tex]$(-5,-2)$[/tex][/tex]
B. [tex][tex]$(2,5)$[/tex][/tex]
C. [tex][tex]$(-2,5)$[/tex][/tex]
D. [tex][tex]$(-5,2)$[/tex][/tex]


Sagot :

To determine the image of the point [tex]\((5, -2)\)[/tex] under a rotation of [tex]\(90^{\circ}\)[/tex] counterclockwise about the origin, we need to follow the standard rules for rotating points in the Cartesian plane.

When we rotate a point [tex]\((x, y)\)[/tex] counterclockwise by [tex]\(90^{\circ}\)[/tex], the new coordinates [tex]\((x', y')\)[/tex] can be found using the following transformations:
[tex]\[ x' = -y \][/tex]
[tex]\[ y' = x \][/tex]

Let's apply these transformations to the given point [tex]\((5, -2)\)[/tex]:

1. Start with the given coordinates: [tex]\((5, -2)\)[/tex].
2. Apply the transformation for the 90-degree counterclockwise rotation:
[tex]\[ x' = -(-2) = 2 \][/tex]
[tex]\[ y' = 5 \][/tex]

So, after the rotation, the new coordinates of the point are [tex]\((2, 5)\)[/tex].

Now, let's check the given answer choices:
1. [tex]\((-5, -2)\)[/tex]
2. [tex]\((2, 5)\)[/tex]
3. [tex]\((-2, 5)\)[/tex]
4. [tex]\((-5, 2)\)[/tex]

From these choices, the correct coordinates [tex]\((2, 5)\)[/tex] correspond to the second option.

Therefore, the image of the point [tex]\((5, -2)\)[/tex] under a [tex]\(90^{\circ}\)[/tex] rotation counterclockwise about the origin is [tex]\((2, 5)\)[/tex], which is option 2.