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Math 181: Test for Chapter 1

This test may be taken with a calculator and any number of hand-written notes. Computers or books and other printed material, be they copies, printouts, or typed, are not allowed.
Place your answer in space provide for each question.
Notice: this page changes every time it is loaded, or re-loaded (refreshed).
Be careful to read all of each problem. Because these pages are produced on the WEB, for printed versions of these pages there is a chance that a problem, or its possible answers, will be split across two pages.
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The next two problems are based on the "Battleship" game presented in class and in the web notes. In each problem you are given the distance from each of two points to the "ship". You are to use that information to identify the location of the ship. Two graphs are provided to aid in your deliberation, but they serve only as an aid.
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For the next 6 problems, you are given two points and asked to determine the slope of the line containing the points.
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For the following problems you are to find the required linear equation, and write it in standard form.
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For the following problems you are to find the required slopes.
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For the following problems you are to find the required linear equation, and write it in standard form.
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Use the following graph for questions 28-32.

____________________ 28. Give the coordinates for point A in the graph above.
____________________ 29. Give the coordinates for point B in the graph above.
____________________ 30. Give the coordinates for point in the graph above where line L and line M intersect.
____________________ 31. Give the equation of line L in the graph above.
____________________ 32. Give the equation of line M in the graph above.

Problems 33-36 are to have their answers drawn on the following graph.

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____________________ 38. From the data in Table A compute and report the least-squares linear regression for predicting unemployement rates from inflation rates. Round the slope and y–intercept to 4 decimal places.
____________________ 39. From the data in Table A compute and report the correlation coefficient for predicting unemployement rates from inflation rates. Round the the correlation coefficient to 4 decimal places.
____________________ 40. Use the linear regresison from problem 38 to predict the unemplyment rate when the inflation rate was

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©Roger M. Palay     Saline, MI 48176     August, 2010