# Integrated Algebra Regents Exam 0810

May 29th, 2015
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1 The school store did a study comparing the cost of a sweatshirt with the number of sweatshirts sold. The price was changed several times and the numbers of sweatshirts sold were recorded. The data are shown in the table below.

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Intermediate AlgebraTutorial 15:The Slope of a LineLearning ObjectivesAfter completing this tutorial, you should be able to:1. Find the slope given a graph, two points or an equation.2. Write a linear equation in slope/intercept form.3. Determine if two lines are parallel, perpendicular, or neither.IntroductionThis tutorial takes us a little deeper into linear equations. We will be looking at the slope of a line. We will also look at the relationship between the slopes of parallel lines as well as perpendicular lines. Let's see what you can do with slopes.TutorialSlopeThe slope of a linemeasures the steepness of the line.Most of you are probably familiar with associating slope with "rise over run".Risemeans how many units you move up or down from point to point. On the graph that would be achange in theyvalues.Runmeans how far left or right you move from point to point. On the graph, that would mean achange ofxvalues.Here are some visuals to help you with this definition:Positive slope:Note that when a line has a positive slope it goes up left to right.Negative slope:Note that when a line has a negative slope it goes down left to right.Zero slope:slope= 0Note that when a line is horizontal the slope is 0.Undefined slope:slope= undefinedNote that when the line is vertical the slope is undefined.Slope Formula Giv

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