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111E2-F2010 - MA 11100 1 Fall 2010 Find the slope of a line...

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MA 11100 Exam 2A Fall 2010 1 1) Find the slope of a line through points ( ) ( ) 2, 4 and 8, 7 - - - . 10 3 1 2 1 2 3 10 3 10 A B C D E - - 2) Which graph best approximates the line 3 1 2 y x = - - ? The scale used on both axes is 1 unit per hash mark. x x x x x y y y y y
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MA 11100 Exam 2A Fall 2010 2 3) The trade-in value of a lawn mower can be determined using the function ( ) 75 980 V n n = - + , where the value is in dollars and n represents the number of summers the lawn mower has been used. What does the number -75 represent? A The lawn mower will completely depreciate (lose its value) after 75 summers. B The lawn mower’s value has decreased by $75. C The lawn mower’s value is decreasing by $75 per summer. D The lawn mower was purchased 75 summers ago. E The lawn mower was purchased for $75. 4) Which statement is false ? The line 5 is vertical. The line 2 has a slope of 0. A vertical line has zero slope. The of 2 6 is 3. 2 3 12 is a linear equation. A x B y C D y x E x y = = - = - - = -intercept x 5) Find the equation of a line with point 2 (6, 1) and slope of 3 - - in standard form.
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