vals[0] 
 FindQuadrant 


 Find Quandrant x = -4 x = -3 x = -2 x = -1 x = 0 x = 1 x = 2 x = 3


 y = 2x + 3 lower left lower left lower left upper left upper y-axis upper right upper right upper right


 y = 0.5x + -4 lower left lower left lower left lower left lower y-axis lower right lower right lower right


 y = -1x + 3 upper left upper left upper left upper left upper y-axis upper right upper right right x-axis


 y = -3x + 6 upper left upper left upper left upper left upper y-axis upper right right x-axis lower right


 y = -7x + 4 upper left upper left upper left upper left upper y-axis lower right lower right lower right


 y = 5x + -15 lower left lower left lower left lower left lower y-axis lower right lower right right x-axis


 y = 13x + -12 lower left lower left lower left lower left lower y-axis upper right upper right upper right


 y = -4x + 3.3 upper left upper left upper left upper left upper y-axis lower right lower right lower right