5.4 Combining InequalitiesObjective:  To graph the solution sets of conjunctions & disjunctions of inequalitiesFrameworks:   10.P.1, 10.P.7
How would you graph a disjunction?x < 2 or x = 2The graph should contain all the solutions of the two sentences
Graph 11 – 3x ≤ 26
Graph x ≤ -2 and x > 3
Graph x ≤ -2 or x > 3
Graph x > 1 or x < 4
Graph x > 1 and x < 4
Graph x -1 ≥ -3 and 4 < 2x - 2
Graph x -1 ≥ -3 or 4 < 2x - 2
x > -1 and x < 4can also be written as:-1 < x < 4This can be read as:    -1 is less than x and x is less than 4    x is greater than -1 and x is less than 4    x is between -1 and 4
Graph -3 < 2x + 5 ≤ 9
ExampleThis year, Jim’s weight fluctuated within a 7-lb. range.  At times, he weighed as little as 125 lb.  At other times, he weighed almost 132 lb.  Write a conjunction that describes the range of values for Jim’s weight.125 ≤ x and x < 132125 ≤ x < 132
Turn to page 182Do 1-20, 35-37

Algebra 5 Point 4

  • 1.
    5.4 Combining InequalitiesObjective: To graph the solution sets of conjunctions & disjunctions of inequalitiesFrameworks: 10.P.1, 10.P.7
  • 2.
    How would yougraph a disjunction?x < 2 or x = 2The graph should contain all the solutions of the two sentences
  • 3.
    Graph 11 –3x ≤ 26
  • 4.
    Graph x ≤-2 and x > 3
  • 5.
    Graph x ≤-2 or x > 3
  • 6.
    Graph x >1 or x < 4
  • 7.
    Graph x >1 and x < 4
  • 8.
    Graph x -1≥ -3 and 4 < 2x - 2
  • 9.
    Graph x -1≥ -3 or 4 < 2x - 2
  • 10.
    x > -1and x < 4can also be written as:-1 < x < 4This can be read as: -1 is less than x and x is less than 4 x is greater than -1 and x is less than 4 x is between -1 and 4
  • 11.
    Graph -3 <2x + 5 ≤ 9
  • 12.
    ExampleThis year, Jim’sweight fluctuated within a 7-lb. range. At times, he weighed as little as 125 lb. At other times, he weighed almost 132 lb. Write a conjunction that describes the range of values for Jim’s weight.125 ≤ x and x < 132125 ≤ x < 132
  • 13.
    Turn to page182Do 1-20, 35-37