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Graphing Inequalities (coordinate plane)
 

Graphing Inequalities (coordinate plane)

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    Graphing Inequalities (coordinate plane) Graphing Inequalities (coordinate plane) Presentation Transcript

    • Graphing Linear Inequalities in Two Variables
      • Graph a linear inequality in two variables
      • Model a real life situation with a linear inequality.
    • Graphing an Inequality in Two Variables Graph x < 2 Step 1: Start by graphing the line x = 2 Now what points would give you less than 2? Since it has to be x < 2 we shade everything to the left of the line.
    • Graphing a Linear Inequality Sketch a graph of y  3
    • Some Helpful Hints
      • If the sign is > or < the line is dashed
      • If the sign is  or  the line will be solid
      • If the sign > or  the shading either goes up or to the right
      • If the sign is < or  the shading either goes down or to the left
    • Using What We Know Sketch a graph of x + y < 3 Step 1: Put into slope intercept form y <-x + 3 Step 2: Graph the line y = -x + 3
      • When dealing with slanted lines
      • If it is > or  then you shade above
      • If it is < or  then you shade below the line