2.4 Review

Which scatter diagram shows a linear relationship between x and y?

• A

• B

• C

• D

A mathematics teacher wanted to see the correlation between test scores and homework. The homework grade (x) and test grade (y) are given in the table. Find the line of best fit that represents this set of data, rounding all coefficients to the nearest tenth.

Mathematical Equivalence

ON

A mathematics teacher wanted to see the correlation between test scores and homework. The homework grade (x) and test grade (y) are given in the table. Using the line of best fit to find the projected test grade, to the nearest integer, for a student with a homework grade of 34.

Mathematical Equivalence

ON

An administrator at Souther Illinois University wants to find a function that relates a student's college grade point average G to the high school grade point average x. Find the line of best fit relating high school GPA and college GPA. Round to three decimal places.

Mathematical Equivalence

ON

Use the line of best fit to predict a student's college GPA if her high school GPA is 3.23. Round to two decimal places

Mathematical Equivalence

ON

Mathematical Equivalence

ON

Mathematical Equivalence

OFF

Suppose that a company has just purchased a new machine for its manufacturing facility for $120,000. The company chooses to depreciate the machine using the straight-line method over 10 years. Write a linear function that expresses the book value of the machine as a function of its age.

Suppose that a company has just purchased a new machine for its manufacturing facility for $120,000. The company chooses to depreciate the machine using the straight-line method over 10 years. What is the book value of the machine after 4 years?

Mathematical Equivalence

ON

Suppose that a company has just purchased a new machine for its manufacturing facility for $120,000. The company chooses to depreciate the machine using the straight-line method over 10 years. After how many years will the machine be worth $60,000?

Mathematical Equivalence

OFF