Which expression represents the difference of (8x-5y) and (2x-y)?

which  best  describes the transformation from the graph of  f(x) =  x2  to the graph of  f(x) = (x  – 3)2  – 1?   left 3 units, down 1 unitleft 3 units, up 1 unitright 3 units, down 1 unit  right 3 units, up 1 unit

What is the length of the segment joining the points at (4,5) and (6,-2) round to the nearest tenth if necessary

Reflect the point (7,0) across the y-axis