SOLUTION: You decide to drive across the country to visit your aunt in California. The number of miles (m) you travel each day varies directly with the number of hours (h) you drive that day

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Question 556697: You decide to drive across the country to visit your aunt in California. The number of miles (m) you travel each day varies directly with the number of hours (h) you drive that day. On the first day, you drive for 9 hours and cover 405 miles.
Write the direct variation equation expressing miles in terms of hours. Use the letters m, k, and h only.

Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
We have m = kh where k is a constant (in this case, velocity). Since 405 = 9k, we obtain k = 45. Hence, m = 45h.