3 types of no correlation scatterplots

Find the slope of the line that contains the following points. r(-2, 4), s(6, -2)

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

Question: a) does the given set of points represent a linear function? how do you know? b) assume that the point (-2,4) lies on the graph of a line. what y-values could complete this set of ordered pairs that lie on the same line: (- (hint: there are several correct answ