Question

the vertices of a triangle are p(-7 -4),q(-7,-8),and r(3,-3).Name the vertices of the image reflected across the line y=x.
help!!

Answer 1

reflection through the line y=x moves

(x,y) -> (y,x)

So, it looks like C with a typo.

I mean, geez, did you try actually plotting a point and seeing what happened if you flipped it over the line y=x?

or maybe googling reflections?

http://www.regentsprep.org/regents/math/geometry/gt1/reflect.htm

Answer 2

The choices are
A. P'(4,7),Q'(8,7),R'(3,-3)
B. P'(4,-7),Q'(8-7),R'(3,3)
C. P'(4-7),Q'(-8,-7),R(-3,3)
D. P'(-4,7),Q'(-8,7),R'(-3,-3)
but I think its "c"

Answer 3

The answer is C. Just took the test.