Notes from 10.29.13, reference only, do not copy
Notes from 10.29.13 Reference only, do not copy.
Example Problem (you must show your work)
PracCce Problem 1 (you must show your work)
It costs $3 per day to run a ad in a newspaper plus a flat fee of $9. 1. What is the Independent and Dependent Variable? IV = Units of IV = DV = Units of DV = 2. What is the slope intercept form of this equaCon? 3. What is the relaConship between units in the rate of change? 4. What are the coordinates of the y-‐intercept? Is this a reasonable value? Does it make sense?
5. What are the coordinates of the x-‐intercept? Is this a reasonable value? Does it make sense?
(Graph the funcCon on your calculator to verify your answers.) 6. Create to a table of 5 significant points. x y significance LeZ of intercept Intercept Pt in between ints Intercept Right of Intercept 7. What is the Domain and Range of this funcCon?
PracCce Problem 2 (you must show your work)
Nicole charges a iniCal fee of $3, plus $5 per hour. 1. What is the Independent and Dependent Variable? IV = Units of IV = DV = Units of DV = 2. What is the slope intercept form of this equaCon? 3. What is the relaConship between units in the rate of change? 4. What are the coordinates of the y-‐intercept? Is this a reasonable value? Does it make sense?
5. What are the coordinates of the x-‐intercept? Is this a reasonable value? Does it make sense?
(Graph the funcCon on your calculator to verify your answers.) 6. Create to a table of 5 significant points. x y significance LeZ of intercept Intercept Pt in between ints Intercept Right of Intercept 7. What is the Domain and Range of this funcCon?
PracCce Problem 3 (you must show your work)
A plumber charges $25 for a service call plus $50 per hour of service. 1. What is the Independent and Dependent Variable? IV = Units of IV = DV = Units of DV = 2. What is the slope intercept form of this equaCon? 3. What is the relaConship between units in the rate of change? 4. What are the coordinates of the y-‐intercept? Is this a reasonable value? Does it make sense?
5. What are the coordinates of the x-‐intercept? Is this a reasonable value? Does it make sense?
(Graph the funcCon on your calculator to verify your answers.) 6. Create to a table of 5 significant points. x y significance LeZ of intercept Intercept Pt in between ints Intercept Right of Intercept 7. What is the Domain and Range of this funcCon?
PracCce Problem 4 (you must show your work)
Rufus has collected 100 pounds of aluminum cans and plan on collecCng an addiConal 25 pounds a week. 1. What is the Independent and Dependent Variable? IV = Units of IV = DV = Units of DV = 2. What is the slope intercept form of this equaCon? 3. What is the relaConship between units in the rate of change? 4. What are the coordinates of the y-‐intercept? Is this a reasonable value? Does it make sense?
5. What are the coordinates of the x-‐intercept? Is this a reasonable value? Does it make sense?
(Graph the funcCon on your calculator to verify your answers.) 6. Create to a table of 5 significant points. x y significance LeZ of intercept Intercept Pt in between ints Intercept Right of Intercept 7. What is the Domain and Range of this funcCon?
PracCce Problem 5 (you must show your work)
A water tank already has 55 gallons of water in it when water begins to flow at a rate od 8 gallons every minute. 1. What is the Independent and Dependent Variable? IV = Units of IV = DV = Units of DV = 2. What is the slope intercept form of this equaCon? 3. What is the relaConship between units in the rate of change? 4. What are the coordinates of the y-‐intercept? Is this a reasonable value? Does it make sense?
5. What are the coordinates of the x-‐intercept? Is this a reasonable value? Does it make sense?
(Graph the funcCon on your calculator to verify your answers.) 6. Create to a table of 5 significant points. x y significance LeZ of intercept Intercept Pt in between ints Intercept Right of Intercept 7. What is the Domain and Range of this funcCon?
PracCce Problem 6 (you must show your work)
Maria works as a waitress. She worked an 8 hour shiZ and earned $92.00. 1. What is the Independent and Dependent Variable? IV = Units of IV = DV = Units of DV = 2. What is the slope intercept form of this equaCon? 3. What is the relaConship between units in the rate of change? 4. What are the coordinates of the y-‐intercept? Is this a reasonable value? Does it make sense?
5. What are the coordinates of the x-‐intercept? Is this a reasonable value? Does it make sense?
(Graph the funcCon on your calculator to verify your answers.) 6. Create to a table of 5 significant points. x y significance LeZ of intercept Intercept Pt in between ints Intercept Right of Intercept 7. What is the Domain and Range of this funcCon?