Determine the slope and explain ur answer

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?

Find the solution of this system of equation -7x+y=-20 9x-3y=36

Which table represents a linear function? i'll give brainliest to first answer ^'^