Question

HELPPP!! PLSSS IM STUCK 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.
P'(4, 7), Q'(8, 7), R'(3, -3)?
P'(4, -7), Q'(8, -7), R'(3, 3)?
P'(-4, -7), Q'(-8, -7), R'(-3, 3)?
P'(-4, 7), Q'(-8, 7), R'(-3, -3)?

Answer 1

Reflection across the line y= x, cause to interchange the x and y coordinate
 p(x,y) ⇒ p(y,x)