SOLUTION: You are running in a marathon. You either run 8 miles per hour or walk 4 miles per hour. Write an equation to show the relationship between time ran and time walked during the 26

Question 245206: You are running in a marathon. You either run 8 miles per hour or walk 4 miles per hour. Write an equation to show the relationship between time ran and time walked during the 26.2 mile course and then graph the equation. I tried to use 8X + 4Y = 26.2 but it did not work out. If you could just help me get the right equation then I can do the graph and the following couple of problems which are all related to this equation.
Thanks in advance for your help!
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
You are running in a marathon.
You either run 8 miles per hour or walk 4 miles per hour.
Write an equation to show the relationship between time
ran and time walked during the 26.2 mile course and then
graph the equation.
-----------------------------
Run DATA:
rate = 8 mph ; time = r hrs. ; distance = 8r miles
-----------------------------
Walk DATA:
rate = 4 mph ; time = w hrs ; distance = 4w miles
-----------------------------
Equation:
distance + distance = 26.2 miles
4w + 8r = 26.2
----
Graphable equation:
w = -2r + 6.55
-------------------------

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Cheers,
Stan H.
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