Day 73 – December 13

Algebra 1a: Chapter 4, Lesson 1, page 172.

Inequalities and Their Graphs

Symbols:

  • `<`, is less than
  • `≤`, is less than or equal to
  • `>`, is greater than
  • `≥`, is greater than or equal to

Open or closed circles on the number line:

  • OPEN CIRCLE  (get as close to the value BUT don’t touch) it for `<` or `>`
  • CLOSED CIRCLE (included the value on the number line) for `≤` or `≥`
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