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# 4.2 notes

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### 4.2 notes

1. 1. 4.2 Graph linear equations in a coordinate plane
2. 2. Linear Equation • An equation whose graph is a line.
3. 3. Standard form of a linear equation • ax+by=c
4. 4. Solutions to linear equations • Ordered pairs that result in true statements when substituted into a linear equation.
5. 5. Graphing linear equations • Create a domain of at least three values. • Choose values that are convenient. • Solve the equation for those values.
6. 6. Graph a linear equation • -2x + y = -3
7. 7. y=b and x=a
8. 8. 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?
9. 9. Graph the Equation: • y = 3x - 2
10. 10. Graph the Equation • y = 2.5
11. 11. Graph the Equation • x = -4