SOLUTION: A car gets the best mileage at intermediate speeds. Graph the gas mileage as a function of speed. Determine a reasonable domain and range for the function and justify your reasoni

Algebra ->  Graphs -> SOLUTION: A car gets the best mileage at intermediate speeds. Graph the gas mileage as a function of speed. Determine a reasonable domain and range for the function and justify your reasoni      Log On


   

Question 177000: A car gets the best mileage at intermediate speeds. Graph the gas mileage as a function of speed. Determine a reasonable domain and range for the function and justify your reasoning.
Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
The domain (x axis!) will be the speed of the car. If you are talking about ordinary street cars, what speeds are on the speedometer of your car? Would you say from 0 to 100 mph. Domain: 0+%3C=x%3C=100+.

The range will be the gas mileage, measured on the y axis. You must decide a reasonable range for gas mileage of your particular car. Maybe you normally get a maximum of about 20 miles per gallon at an intemediate speed of about 45 or 50 miles per hour. If you drive slower you get less than 20, if you drive faster you get less than 20. Range: 15%3C=y%3C=20.
Plot a few points indicating this, and connect the points.

R^2