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(x,y) --> (x,-y)

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Q: What rule describes a transformation across the X-Axis?
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What rule describes a transformation across the line yx?

It depends on the kind of transformation: it could be reflection or translation.


Which rule describes a transformation across the x-axis?

Should be (x,y) -> (-x,y) Apologies if it's wrong!


What rule describes a transformation across the Y-Axis?

Since the x coordinate will change, but not the y coordinate, take (x,y) and reflect across the y axis and you have (-x,y)


Which rule describes a transformation across the x axis?

You have to add on the number that you want to transform the graph by. For example to move the graph 2 units along the x-axis the transformation would be f(x+2).


What is the rule that describes transformation?

The transformation rule states that a transformation is an operation that moves, flips, or changes the size or shape of a figure to create a new figure that is congruent to the original. This rule is used in geometry to describe how geometric figures can be altered while maintaining their essential properties.


What is the rule for the transformation above?

The rule for the transformation above is translation. Translation is a transformation that moves every point of a figure the same distance in the same direction.


What is the rule for a reflection across the origin?

To reflect a point across the origin, you simply change the sign of both the x- and y-coordinates of the point. This transformation involves multiplying the coordinates by -1.


Is the rule for the transformation above?

I'm happy to help, but it seems like your question was cut off. Can you please provide more details or clarify what rule or transformation you are referring to?


What is the rule if 21 goes to 56?

A single transformation does not provide enough information to determine a rule.


An equation that describes a function?

a function rule


What is a rule that describes a pattern in nature?

a law!


What is an expression that describes that describes the relationship between each input and output?

function rule