PLZ HELP ME ON THIS MATH I HAVE DONE IT 4 TIMES AND MADE2 25% and 1 45% so i really need help its worth 100 points

Aregression was run to determine if there is a relationship between hours of tv watched per day (x) and number of situps a person can do (y). the results of the regression were: y=ax+b a=-0.662 b=30.418 r2=0.703921 r=-0.839

Which undefined geometric term is described as a location on a coordinate plane that is designed by an ordered pair (x,y) ?

What properties allow transformation to be used as a problem solving tool