Which equation represents a nonproportional relationship?
a. y=3x+0
b. y=-3x
c. y=3x+5
d. y=1/3x
chose only

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 can you determine about the solutions of this system

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.