Linear+Inequalities+in+2+variables

when sign in the equation is either, you must use a dotted line when the sign in the equation is either /equal to you need a dark staight line
 * To graph a linear inequality you must first set everything = y **

Example: y+1> 0 first get y by itself y>-1 next you would go to you graphing caluclator the the y= key and type in y=-1 and hit graph then you graph that line on your paper since this equation told you that y > -1 you would shade above the line



Example: l x+2 l < 3 first split inequality x+2<3 x+2>-3 x -5 you graph both lines on your calculator shade to the right of x>-5 and to the left of x<1 Since the problem is a conjuction your final answer is shaded where they over lap the final answer should be shaded between the 2 lines graphed