Get reliable answers to your questions at Westonci.ca, where our knowledgeable community is always ready to help. Ask your questions and receive detailed answers from professionals with extensive experience in various fields. Join our Q&A platform to connect with experts dedicated to providing accurate answers to your questions in various fields.

Sumy is given figure [tex][tex]$ABCD$[/tex][/tex] in the coordinate plane to reflect. The coordinates of point [tex][tex]$D$[/tex][/tex] are [tex][tex]$(a, b)$[/tex][/tex] and she reflects the figure over the line [tex][tex]$y=x$[/tex][/tex].

What are the coordinates of the image [tex][tex]$D'$[/tex][/tex]?

A. [tex][tex]$(a, -b)$[/tex][/tex]
B. [tex][tex]$(b, a)$[/tex][/tex]
C. [tex][tex]$(-a, b)$[/tex][/tex]
D. [tex][tex]$(-b, -a)$[/tex][/tex]


Sagot :

When reflecting a point over the line [tex]\( y = x \)[/tex], the coordinates of the point are swapped. This means that the [tex]\(x\)[/tex]-coordinate and the [tex]\(y\)[/tex]-coordinate exchange places.

Given the coordinates of point [tex]\( D \)[/tex] as [tex]\( (a, b) \)[/tex], after reflecting over the line [tex]\( y = x \)[/tex] we switch the coordinates [tex]\( a \)[/tex] and [tex]\( b \)[/tex].

Therefore, the new coordinates of point [tex]\( D' \)[/tex] (the image of [tex]\( D \)[/tex]) will be [tex]\( (b, a) \)[/tex].

Thus, the correct answer is:
[tex]\[ (b, a) \][/tex]