Question Details

MATH 500 Week 4 Discussion: Linear Models


Linear Equations and Applications: 


1.	Find the x- and y-intercepts for the line given by the equation 3x + 2y = 12

2.	Find the equation of the line that passes through the points (3,1) and (2,-1). Write the equation in slope-intercept form.

3.	Find the equation of the line that passes through the points (1,1) and (-2,10). Write the equation in slope-intercept form.

4.	Suppose a business purchases a new tractor at an original cost of $42,000. Further, suppose this tractor has a useful life of 8 years and a salvage value of $10,000.
a) Use the Straight-Line Method to find the yearly depreciation on this tractor.
b) How much is this tractor worth after 3 years?
c) Find a formula that calculates the tractor- worth after t years. What is the maximum allowable value for t?