Which of the following sets of points are reflections of each other across the y

Algebra
Tutor: None Selected Time limit: 1 Day

  1. Which of the following sets of points are reflections of each other across the origin?
    1. Which of the following sets of points are reflections of each other across the y-axis?
Apr 29th, 2015

answers are 

Which of the following sets of points are reflections of each other across the origin?

    1.  (4, -7) → (-4, 7)      (third option)

Which of the following sets of points are reflections of each other across the y-axis?

    1.(-6, -9) → (6, -9)         (first option)



when  reflecting at the origin the sign of x and y changes....

that is positive become negative and negative becomes positive...

so  (4, -7) changes to  (-4, 7)  by changing the sign


when  reflecting at the y axis  the sign of x changes  and sign of y remain same

so  (-6, -9) changes to (6, -9)   by changing the sign of x and keeping the sign of  y value same


hope you understood..please message if you have any doubts...thank you



Apr 29th, 2015

Did you know? You can earn $20 for every friend you invite to Studypool!
Click here to
Refer a Friend
...
Apr 29th, 2015
...
Apr 29th, 2015
Feb 21st, 2017
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer