Presentation on theme: "Section 4.2 Graphing Linear Equations Using Tables"— Presentation transcript:
1 Section 4.2 Graphing Linear Equations Using Tables Wednesday 11/13/13Class Notes
2 Type 1Let m=2, 6m+2=14 true?Let x=2, y=3 4x+y=11 true?What does this ordered pair (2,3) represent?
3 Important Definitions Coordinate plane: _____________________________________________________________________________________________Each point on the plane corresponds to an ____________ _________of numbers, __________The x-axis and y-axis divide thecoordinate plane into four quadrants:
4 RECALL: How to graph ordered pairs (x,y) “Walk before you run!!”
5 What does a line represent? What is this line made up of?
6 Use the graph to determine if the following points are solutions: (1,5)(-3,3)
7 How to justify your answer WITHOUT a graph: _________________________________________a) (1,5)b) (-3,3)
8 3 steps for Using a Table to Graph an Equation Step 1: Solve for y & write as f(x)=mx+bStep 2: Choose values for x, and use your function to fill out the tableStep 3: Plot the coordinate pairs (points).A line going through these points is a graph of all possible solutions for this equations
9 Use a table of values to graph the equation y+2=3x Step 1: Example:Use a table of values to graph the equation y+2=3xStep 1:Step 2:
10 (example cont.)Step 3:Coordinate pairs foundfrom the table in step 2
11 Use a table of values to graph the equation 3x-2y=6 Step 1: YOUR TURN TO TRY!! Use a table of values to graph the equation 3x-2y=6Step 1:Step 2:
12 (example cont.)Step 3:Coordinate pairs foundfrom the table in step 2
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