Respuesta :
					                   slope = y2 - y1/ x2 - x1
1 - 1/-9 - 4
=0/-13
slope = 0 (meaning that this is the slope of a horizontal line.)
hope this helps :)
					                
					                
					             1 - 1/-9 - 4
=0/-13
slope = 0 (meaning that this is the slope of a horizontal line.)
hope this helps :)
