A sequence of a translation and a reflection (always/sometimes/never) has a point that does not
change position

How can the correlation in the scatter plot graph below best be described? positive correlation negative correlation both positive and negative no correlation

Which representation has a constant of variation of -2.5

How many different three-digit numbers can be formed using the digits 1 comma 2 comma 9 comma 6 comma 4 comma 3 comma and 8 without repetition? for example, 664 is not allowed.