
Concept explainers
a.
Describe the
a.

Answer to Problem 1CYU
Explanation of Solution
Given information:
The table shows the temperature in the ocean at various depths.
Make a
Calculation:
The slope of the line is positive and the points are close to the line.
The slope of the line is negative and the points are not close to the line.
No correlation:
There is no obvious pattern of increase or decrease for the given data.
Consider the table provided into textbook.
Graph the data as ordered pairs with the depth on the horizontal axis and the temperature on the vertical axis. Draw a line through two points that appear to represent the data well, such as
Use maple to graph a scatter plot and a line of fit.
The data show a weak negative correlation.
b.
Use two ordered pairs to write a prediction equation.
b.

Answer to Problem 1CYU
Explanation of Solution
Given information:
The table shows the temperature in the ocean at various depths.
Use two ordered pairs to write a prediction equation.
Calculation:
Find an equation of the line through
Suppose
First find the slope of the line;
Simplify the above equation;
Now, find an equation.
Substitute
Simplify the above equation ;
Hence, the equation is
c.
Use your prediction equation to predict the missing value.
c.

Answer to Problem 1CYU
Explanation of Solution
Given information:
The table shows the temperature in the ocean at various depths.
Use your prediction equation to predict the missing value.
Calculation:
Find
Substitute
Simplify the above equation;
Hence, at depth of
Chapter 2 Solutions
Algebra 2
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