1.   What type of relationship or pattern does the scatter plot suggest?
   
    A. a linear relationship whose data have a positive relationship B. a linear relationship whose data have a negative relationship
    C. none of these D. no pattern
    Hint

  2.   Which is the best prediction equation for the data?
   
    A. y = 20x - 19,950 B. y = 5x - 19,950
    C. y = 10x - 19,950 D. y = 25x - 19,950
    Hint

  3.   Use a graphing calculator to find the equation of the regression line.
   
    A. y = x - 576 B. y = 2x - 25
    C. y = 12x - 23,947 D. y = 23x - 21,000
    Hint

  4.   Use two ordered pairs to write the equation of a best-fit line.
   
    A. y = 3x B. y = 5x + 75
    C. y = 5x D. y = 3x + 72
    Hint

  5.   Ilene analyzed her test scores and determined the equation of the best-fit line was y = 4.25x + 72. Predict her score for the 5th test.
    A. 88.75 B. 72.5
    C. 98.5 D. 93.25
    Hint



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