The coefficient of determination (r2) tells us a. whether r has any significance. b. the proportion of total variation that is explained. c. that we should not partition the total variation. d. that the coefficient of correlation (r) is larger than 1.

Graph g(x)=2cosx . use 3.14 for π . use the sine tool to graph the function. graph the function by plotting two points. the first point must be on the midline and closest to the origin. the second point must be a maximum or minimum value on the graph closest to the first point.

Which expression and diagram represent “renee biked four times as far this month as last month”?

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2