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Question 1070651: Chris borrowed money from her brother. Each week she pays him $5 toward her debt. After 8 weeks, she has $8 left to pay. This situation is modeled by a line with a slope of -5 that contains the point (8, 8). Which point is also on this line?
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39617)   (Show Source):
You can put this solution on YOUR website! Two points with clear meaning are y-intercept and x-intercept.
y, how much is owed
x, count of weeks past since borrowing
m, slope -5
b, vertical axis intercept
Those could be for form y=-5x+b, but the point-slope form might be convenient since you are given slope AND a point (8,8).
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 ----------another point on the line is (0,48), meaning that Chris borrowed $48.
The x-intercept is not an integer, nor whole number.
 --------------upon paying after 9 weeks, Chris still owes $3.
Answer by MathTherapy(10552)  (Show Source):
You can put this solution on YOUR website!
Chris borrowed money from her brother. Each week she pays him $5 toward her debt. After 8 weeks, she has $8 left to pay. This situation is modeled by a line with a slope of -5 that contains the point (8, 8). Which point is also on this line?
Another point on line: (9, 3), since after 9 weeks, she'll owe $3.
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