{ 4.4 Graphing a Function Rule I can graph equations that represent functions.

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Presentation transcript:

{ 4.4 Graphing a Function Rule I can graph equations that represent functions.

 A graph is the set of all solutions to an equation.  When a graph shows a real-world relationship, it only shows points that make sense for the given situation Graphing a Function Rule

 Create a table of values  Plot the ordered pairs  Connect the points with a line to show ALL solutions  Ex: graph the function rule y = -2x + 1 How to Graph

 Choose appropriate intervals for the units on the axes.  If all data are nonnegative, show only the first quadrant.  Plot only points that make sense in context. Real-World Functions

You try!

 Megan buys eggs at the supermarket for $1.75 per carton. The cost is a function of the number of cartons bought. What is the graph of the function?  Graph Practice

 A continuous graph is a graph that is unbroken  A discrete graph is composed of distinct, isolated points. Continuous vs. Discrete

 The function rule W = 8g represents the total weight W, in pounds, of a spa that contains g gallons of water. Its capacity is 250 gallons. What is a reasonable graph?  Is this continuous or discrete? Identifying

 ODDS ONLY  P. 257 #9-31 Assignment