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Middle/High School Algebra, Geometry, and Statistics (AGS)
2.16 Linear Inequalities: Solutions Using Graphing

Graph for x + y 3 and y 2x - 3

Question: Graph the solution to this system of inequalities:
x + y 3
y 2x - 3
Solution:
First we draw a graph for y 2x - 3.
Ordered pairs for y = 2x - 3

x-2-1012
y = 2x - 3-7-5-3-11
Ordered pairs(-2,-7)(-1,-5)(0,-3)(1,-1)(2,1)

Any point in the cross region where the two regions overlap will satisfy x + y 3 and y 2x - 3
Note: A system involving parallel lines may lack a solution because there are no overlapping regions.
Example: y = x + 2 and y = x - 1


Question 1: Graph the solution to this system of inequalities: x + 2y 12 and 3x - y 6
Question 2: Graph the solution to this system of inequalities: x 2 and y 4 and x - y < 6