121616949-math.20

# 121616949-math.20 - 6 Chapter 1 Analytic Geometry minutes...

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6 Chapter 1 Analytic Geometry minutes you pass a sign saying it is 105 miles to Seattle. Using the horizontal axis for the time t and the vertical axis for the distance y from your starting point, graph and find the equation y = mt + b for your distance from your starting point. How long does the trip to Seattle take? 12. Let x stand for temperature in degrees Celsius (centigrade), and let y stand for temperature in degrees Fahrenheit. A temperature of 0 C corresponds to 32 F, and a temperature of 100 C corresponds to 212 F. Find the equation of the line that relates temperature Fahrenheit y to temperature Celsius x in the form y = mx + b . Graph the line, and find the point at which this line intersects y = x . What is the practical meaning of this point? 13. A car rental firm has the following charges for a certain type of car: \$25 per day with 100 free miles included, \$0.15 per mile for more than 100 miles. Suppose you want to rent a car for one day, and you know you’ll use it for more than 100 miles. What is the equation
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