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Mathematics 8 Online
OpenStudy (anonymous):

Which of the following sets of points are reflections of each other across the "Y" axis? A.(-6,-9)->(6,-9) B.(-6,-9)->(6,9) C.(-6,-9)->(-6,9) D.(-6,-9)->(-9,-6)

Parth (parthkohli):

If it's across the y-axis, then the y co-ordinate won't change.

Parth (parthkohli):

|dw:1339841987328:dw| see how the height is same, tho the x-coordinate changes it's plus/minus sign :)

Parth (parthkohli):

The options are in the form (x,y) so I know you could figure it out :)

Parth (parthkohli):

The reflection of (x,y) across the y axis would be (-x,y)

OpenStudy (anonymous):

so would it be B ? OR no ?

Parth (parthkohli):

It'd be the one in which the y coordinate doesn't change :)

OpenStudy (anonymous):

A ?

OpenStudy (anonymous):

|dw:1041422857046:dw|

OpenStudy (anonymous):

its A

OpenStudy (anonymous):

Thanks.

OpenStudy (anonymous):

medal plz

OpenStudy (anonymous):

How do i give you a medal

OpenStudy (anonymous):

click on the best answer

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