Posted by ashlin on Thursday, July 23, 2009 at 10:45pm.
The table shows the closing value of a stock index for one week in March, 2004.
a. Using the day as the xvalue and the closing value as the yvalue, write equations in slopeintercept form for the lines that represent each value change.
b. What would indicate that the rate of change for two pair of days was the same? Was the rate of change the same for any of the days shown?
c. Use each equation to predict the closing value for the next business day (Day 22). The actual closing value was 1909.90. Did any equation correctly predict this value? Explain.

math  ashlin, Thursday, July 23, 2009 at 10:49pm
Stock Index
March, 2004
____________________________
Day Closing Value
15  1939.20
16  1943.09
17  1976.76
18  1962.44
19  1940.47

math  Anonymous, Friday, August 7, 2015 at 10:47pm
Calculate Dy/Dx if y = LN (2x3 + 3x)
Answer This Question
Related Questions
 precalc  The table shows the closing value of a stock index for one week in ...
 math  slopeintercept  How do I write one equations in slopeintercept form, ...
 math (precalc)  Analyzing a Stock. The beta, B of a stock represents the ...
 Algebra  The table below shows the opening value of a stock on the first day of...
 Algebra  The table below shows the opening value of a stock on the first day of...
 MATH  How do I write one equations in slopeintercept form, and three other ...
 Algebra  10. Write an equation in pointslope form for the line through the ...
 math  How do I write one equations in slopeintercept form, and three other ...
 Math  Slope intercept  Write this equation in slope intercept form. 6x3y2=0 ...
 math  The value of a car decreases at a constant rate. After 1 year the value ...
More Related Questions