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Mathematics 21 Online
OpenStudy (anonymous):

Triangle ABC is reflected over the x-axis:

OpenStudy (anonymous):

OpenStudy (anonymous):

ok

OpenStudy (alexandervonhumboldt2):

what to find?

OpenStudy (anonymous):

I know its not (-1,4) Out of the choices: (1,4) (-1,-4) (1,-4) (-1,4)

OpenStudy (bibby):

\(\(x,y) \longrightarrow (x,-y)\)

OpenStudy (alexandervonhumboldt2):

Coordinates of new triangle? A'(2, -1) B"(-1, -4) C'(3, -7)

OpenStudy (bibby):

you're not helping by just typing the answer

OpenStudy (alexandervonhumboldt2):

rule is (x, y)---->(x, -y)

OpenStudy (anonymous):

(x1, y1) ------>(x1, -y1)

OpenStudy (anonymous):

1,-4?

OpenStudy (anonymous):

Oh. so their both negatives

OpenStudy (alexandervonhumboldt2):

i dot see a corrdinate 1 -4

OpenStudy (anonymous):

Its the third answer choice

OpenStudy (anonymous):

Im so confused...

OpenStudy (anonymous):

@AlexandervonHumboldt2

OpenStudy (alexandervonhumboldt2):

-1, -4 if reflection is over x asis

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