Over the ravine!
You are helping to design a road for a high mountain pass. There are two routes over the pass, but both
have to cross steep ravines. Use what you know about solving radical functions to design a bridge that
will safely cross the ravine.
Your bridge
1. What is the horizontal di...
You are helping to design a road for a high mountain pass. There are two routes over the pass, but both
have to cross steep ravines. Use what you know about solving radical functions to design a bridge that
will safely cross the ravine.
Your bridge
1. What is the horizontal distance that your bridge must span to clear the ravine? (1 point)
The figure below represents your bridge, where the horizontal distance from one edge of the ravine to the
other is x, the rise of the bridge from one side of the ravine to the other is y, and the length of the bridge
deck is r.
Horizontal distance is 150
2. Write a function that models the relationships among x, y, and r. (Hint: Use the Pythagorean theorem.)
Then solve the equation for r in terms of x and y.
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