Unformatted text preview: INTERMEDIATE ALGEBRA
GPS # 16 4.3 SYSTEMS OF LINEA R IN EQUALITIES NAME: Useful Guidelines:
To graph a Linear Inequality:
1. Graph the line (make the line solid if the inequalities involves ! or ! ,
or make the line dash if inequalities involves < or >).
2. Pick a point not on the line as a test point and substitute the coordinates in the inequality.
3. Shade the side of the line that includes the test point if the test point satisfies the original
inequality; otherwise, shade the region on the other side of the boundary line.
1. Graph each linear inequality in two variables. Label all the points.
a) x + 2 y ! 6
b) ! y + 2 x > 4 2. Graph each compound inequality. Label all the points.
a) 3 x ! 2 y " 5 and y > 1
b) ! y + x " 4 and x ! 3 3. Graph each compound inequality. Label all the points.
a) x + y ! 5 or y ! 4
b) x + 2 < y or x > 7 R0907 a.s. http://faculty.valencia.cc.fl.us/ashaw ...
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