Which of the following graphs is not a function? a. On a coordinate plane, a parabola opens up and goes through (negative 2, 1), has a vertex at (0, 0), and goes through (2, 1). c. On a coordinate, a cubic root function approaches y = negative 3 and y = 3. b. On a coordinate, plane a cubic root function approaches x = negative 3 and x = 3. d. On a coordinate plane, a parabola opens to the right and goes through (1, 1), (0, 0) and (1, negative 1).

Look at this system of equations. -3x + 3y = 12 y = x + 4 the solution set of this system is best explained by which of these statements? a) the graphs of the equations are the same line because the equations have the same slope and the same y-intercept. the system has infinitely many solutions. b) the graphs of the equations are parallel lines because they have the same slope but different y-intercepts. the system has no solution. c) the graphs of the equations are lines that intersect at one point because the equations have the same slope but different y-intercepts. the system has exactly one solution. d) the graphs of the equations are lines that intersect at one point because the equations have the same slope and the same y-intercept. the system has exactly one solution.