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Vocabulary – add these to your pink sheet

Vocabulary – add these to your pink sheet. New word: Visual Clue: Definition:. Parallel. lines that don’t cross lines with the same slope m = ½ II m = ½. lines that cross at 90 o angles

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Vocabulary – add these to your pink sheet

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  1. Vocabulary – add these to your pink sheet New word: Visual Clue: Definition: Parallel • lines that don’t cross • lines with the same slope • m = ½ II m = ½ • lines that cross at 90o angles • lines with the opposite reciprocal slopes • m = ½ m = -2 90o Perpendicular T

  2. Notice: • The notes and assignment for this lesson are available as a handout. • The folder for this hand out is available in the box for unit five on the home page

  3. 2 sets of data plotted as ordered pairs on a graph. • Used to study relationships between data

  4. Outlier 10 97 What if someone spent 10 minutes studying got a 97%? As time spent studying increases (goes up), scores increase (go up).

  5. r ≈ 0.5 r ≈ 0.9 r = 1

  6. r ≈ -0.4 r ≈ -0.92 r = -1 r = 0

  7. Positive, as time goes on, price increases.

  8. Use the points (1993, 9.60) and (1998, 13.60) to find the equation of the line of fit. y – y1 = m(x – x1) y – 9.6 = 0.8(x – 1993) y – 9.6 = 0.8x - 1594.4 +9.6 + 9.6 m= 13.6 – 9.6 1998 – 1993 m= 4 5 The line that best fits the data! m= 0.8 y = 0.8x + -1584.8 Use your equation to predict the average cost of baseball tickets in the year 2007. y = 0.8x + -1584.8 y = 0.8(2007) + -1584.8 y = 20.80

  9. Assignment: Lesson 5-7 Complete the handout from class Chapter 5 Test (part 2) on Monday!

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