## Transformation-reflection on a coordinate plane

The applet includes instructions for the first three questions. When you’re ready to move on to the next question, move the slider labeled “question.” To predict where the new coordinates will be, pause before using the applet to display the transformation mentioned in each query.
p> p> p> p> p> p>
On a coordinate plane, a quadrilateral. Scale negative 3 to 5 by 1s on the horizontal axis. Scale negative 2 to 3 by 1s on the vertical axis. A B B prime quadrilateral The coordinates of a prime are A(negative 2 comma 1), B(1 comma 2), B prime(4 comma 0), and A prime(4 comma 0). (1 comma negative 1). / p>
The sign of one coordinate changes when a point is reflected around an axis. Reflecting the point (A) with coordinates of ((2,text-1)) around the (x)-axis, for example, changes the sign of the (y)-coordinate, resulting in the point (A’) with coordinates of ((2,1)). Reflecting the point (A) around the (y)-axis changes the sign of the (x)-coordinate, resulting in the image (A”), with coordinates ((text-2,text-1).

## Translations reflections and rotations – geometric

The picture of the graph of a function rotated, on the other hand, is rarely the graph of a function. In the module Quadratics, graph rotations of quadratic functions are briefly discussed.
Assume the regular parabola (y=x2) is moved three units to the right. The vertex ((0,0)) is shifted to ((3,0)), which is the parabola’s vertex (y=(x-3)2). The following are their diagrams.
The point ((p,p2)) is clearly shifted to the point ((p+3,p2)). If (x=p+3) and (y=p2) are true, then (y=(x-3)2). Similarly, a 5 unit translation to the left maps (y=x2) to (y=(x+5)2), with the point ((p,p2) shifted to the point ((p-5,p2).
for any actual figures (a,b\). We have (T(0,0)=(a,b) in particular. This mapping is clearly the product of a horizontal translation via (a) and a vertical translation via (b) (b\). It maps the graph of (y=x2) to the graph of (y=(x-a)2+b), for example.
Dropping a perpendicular from (P) to (l), which meets (l) at (Q), yields the point (Q) (X\). We position (Q) on this perpendicular such that (PX = XQ), with (Q neq P) unless (P) is on this perpendicular (l\). This denotes a (R l) mapping from the plane (mathbbR2) to itself. It’s an involution, which means that repeating the mapping twice yields the identity.

### Geometry translations example problem!

The sign of one coordinate changes when a point is reflected around an axis. Reflecting the point A with coordinates of (2,-1) around the x-axis, for example, changes the sign of the y-coordinate, resulting in the point A′ with coordinates of (2,-1). (2,1). When you reflect point A on the y-axis, the sign of the x-coordinate changes, giving you the picture point A′′, whose coordinates are (-2,-1).
Reflections that cross several lines are more difficult to explain.
We don’t yet have the tools to define rotations in general in terms of coordinates. Here’s an example of a counterclockwise 90-degree rotation with center (0,0).

### Transformations – translating a triangle on the coordinate

Polygon transformation is a popular application of coordinate geometry. Coordinate transformations, such as dilations, translations, and reflections, are used by graphic designers, video game developers, and computer animation artists to create digitally designed art.
On a coordinate plane, dilations may be performed. An enlargement, which produces an image that is larger than the original figure, or a reduction, which produces an image that is smaller than the original figure, are both examples of dilation.
Two pieces of information are needed to perform a dilation on a coordinate plane. To begin, you must first determine the scale factor, or the size of the enlargement or reduction. Second, you’ll need a dilation center, or a point of reference from which to produce the dilation.
Use a triangle, a square, and a hexagon to dilate. Select relative sizes (scale factors) that are both less than and greater than one. Choose resize points in the coordinate plane, including the origin (0, 0) and other points in the coordinate plane (center of dilation).