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# 4.2 notes

## by toney on Oct 29, 2010

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## 4.2 notesPresentation Transcript

• 4.2 Graph linear equations in a coordinate plane
• Linear Equation
• An equation whose graph is a line.
• Standard form of a linear equation
• ax+by=c
• Solutions to linear equations
• Ordered pairs that result in true statements when substituted into a linear equation.
•
• Graphing linear equations
• Create a domain of at least three values.
• Choose values that are convenient.
• Solve the equation for those values.
• Graph a linear equation
• -2x + y = -3
• y=b and x=a
• Vertical Line Test
• A function is represented by a graph in which a vertical line will not pass through more than one point.
• Is y=b a function?
• Is x=a a function?
• Graph the Equation:
• y = 3x - 2
• Graph the Equation
• y = 2.5
• Graph the Equation
• x = -4