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Math 76O250 Calculus for Business
Selfmarking online assignment 1
Writing Equations of Straight Lines
Best submitted over the internet by 1:00 PM on Thursday 7 September 2017
Methods will be discussed in class
[1] (value 10%)  For the linear equation [ y = 6  3x ] 
The slope m =  
and the yintercept is b = 
[2] (value 10%)  For the linear equation [ 3y  6x + 9 = 0 ] 
The slope m =  
and the yintercept is b = 
[3] (value 10%)  For the linear equation [ 3y + 9 = 0 ] 
The slope m =  
and the yintercept is b = 
[4] (value 10%)  For the linear equation [ 6x + 9 = 0 ] 
The slope m =  
and the yintercept is b = 
[5] (value 10%)  The line L passes through the point (3, 2) and is parallel to the line [ 3y  6x + 9 = 0 ] 
The slope of L is m =  
and the yintercept of L is b = 
[6] (value 10%)  The line L passes through the point (3, 2) and is parallel to the line [ 3y  6x + 9 = 0 ] 
An equation of the line L is [ y = x + ] 
[7] (value 10%)  The line L passes through the points (1, 2) and (4, 1) 
An equation of the line L is [ y = x + ] 
[8] (value 10%)  UHaul charges $30 per day and $2 per mile to rent a truck. 
An equation for the total cost of renting this truck for x days across y miles is :  
C = x + y 
[9] (value 10%)  (Linear Depreciation) An Ipad is worth $500 new and $260 in 12 months. 
An equation for the value V of this Ipad after x months is :  
V = x + 
[10] (value 10%) 
(Sales volume) The number N of books sold is 200 when the book price x is $20, but this number N drops by 5 for each 50cent increase in the book price. 
An equation relating N and x is :  
N = x + 
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