Write a rule to describe the transformation that is a reflection across the X-AXIS.(x,y)->(y,x)....((x,y)->(-x,y)....(x,y)->(-x,-y)....(x,y)->(x,-y)

should be the last one

Why is it the last one?

i thought it was the second one ! i don't know ;\

Yeah I think you are right...it should be the second one.

Across x means that x will go from negative to positive or vice versa if your reversing it.

So the sign will chance for x and not for y

Oh .. okay thanks romero (:

For example, assume the function: f(x) = -5[6(x-6)] + 5 is a transformation of f(x) = x^2 where -5 tells us the reflection on the x axis. The transformation map would be the following: (x,y) --> (x/6 + 6, -5y + 5)

the second one would imply a reflection on the y axis.

think about it, if you had a parabola. |dw:1338088033392:dw|

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