The slope of a line running through points (2,3) and (1,7) is ?

Which approach to the theory-and-research cycle does the following sequence reflect: (1) specific observations suggest generalizations, (2) generalizations produce a tentative theory, (3) the theory is tested through the formation of hypotheses, and (4) hypotheses may provide suggestions for additional observations?

What term makes it inconsistent y=2x - 4

Which of the functions graphed below has a removable discontinuity?