Slides Week 8 and 9

Slides Week 8 and 9 - MIDTERM EXAM RESULTS Letter Grade A B...

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MIDTERM EXAM RESULTS Letter Grade Raw # Correct % of TOTAL A 21-25 13.0% B 18-20 18.9% C 14-17 38.6% D 10-13 23.2% F 0-9 6.3% TOTAL MEDIAN = 15, mean = 15.6
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MIDTERM COURSE GRADES Your course grades at midterm are viewable in the WEBWORK gradebook. Your grade has been computed using the following weightings: Webwork : 15% (only best 6 out of 9 counted) Test 1 42.5% Midterm 42.5%
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LAST DAY FOR AUTOMATIC “W” IN CLASS!! Wednesday, October 29th EVERYONE READ THIS!! If you stay in the class beyond this date, you are committing yourself to complete the course and accept the grade that you earn based on the information in the class syllabus. If you are failing the course, Incompletes are NOT an option, and to withdrawal after this date you MUST petition your Dean with good reason to be able to withdraw from the course. So, please keep this in mind, if you remain in the class beyond this date, you will not be allowed to come to me late in the semester and request that you be given a late Withdrawal, period. (aka The Point of No Return!)
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PART 2: LINEAR MODELS DEFN: A linear equation is any equation of the form Ax + By = C, where A, B, and C are real numbers and A and B are not both zero. DEFN: The graph of the set of all points (x,y) that make a linear equation true is called a line.
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Parts of the line Ax + By = C 1.) slope = -A/B 2.) x-intercept = C/A 3.) y-intercept = C/B slope-intercept form: y = mx + b, where m = slope, b = y-intercept C/B C/A
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2 SPECIAL CASES: 1.) By = C slope = 0 x-intercept = none y-intercept = C/B 2.) Ax = C slope = undefined x-intercept = C/A y-intercept = none C/B By= C Ax=C C/A
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Rules for working with lines: Rule 1: Given any two points on a line, (x1, y1) and (x2, y2), the slope of the line is given by m = (y2 - y1) / (x2 - x1). Rule 2: If two lines are parallel, then they have the same slope. Rule 3: To graph a line, find two points on it, plot them and connect. Rule 4: To find the equation of a line given it’s slope m and a point (x1, y1) a.) plug the slope m into y = mx + b. b.) plug the point (x1, y1) into the resulting equation. c.) solve the equation for b. d.) rewrite the equation using the value of b found in part c.).
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1.) Find the equation of the line with slope m = 4 and x-intercept 3. 2.) Find the equation of the line that passes through the
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This note was uploaded on 11/16/2010 for the course MATH 118 taught by Professor Stevemckinley during the Spring '10 term at Indiana.

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Slides Week 8 and 9 - MIDTERM EXAM RESULTS Letter Grade A B...

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