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Home > MC2 > Chapter 8 > Lesson 8.2.4 > Problem 8-69

8-69.

Write the inequality represented by each graph.

  1. Since the arrow is pointing to the left, that means that all those values are less than the selected point.

    Therefore, any value to the left of is less than . Since the circle above the selected point is open, the point itself is not included and we use either or .

  1. See part (a).

  1. Notice that this time the circle above the selected point is shaded in, so the point itself is included. That means we will use either or . Since the arrow is pointing to the right, that means that all those values are greater than the selected point.