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# Nov19 Graphing Linear Equations

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### Nov19 Graphing Linear Equations

1. 1. 1
2. 2. Graphing Lines ­ 2 "Using the Intercepts Method" There are 2 Intercepts for any linear equation: • x-intercept: where line crosses the x­axis • y-intercept: where line crosses the y­axis  *to find x-intercept from any eq'n, let y = 0, and solve for x. *to find y-intercept from any eq'n, let x = 0, and solve for y. 2
3. 3. • Graph 3x ­ 2y = 6 3
4. 4. • Graph    y = 2x ­ 2 4
5. 5. • Graph    3x + 4y ­ 12 = 0 5
6. 6. Graphing Lines ­ 3 "Using Slope‐Intercept Form" y = mx + b  the slope­intercept form of a linear eq'n. * To graph using this method, we MUST convert equations to slope-intercept form • Graph  x ­ 2y = 2  using slope­int. method 6
7. 7. • Graph  3x-y+4=0  using slope­int. method 4 3 2 1 ­6 ­5 ­4 ­3 ­2 ­1 1 2 3 4 5 6 ­1 ­2 ­3 ­4 7
8. 8. • Graph  y = -1/4 x + 5  using slope­intercept method 4 3 2 1 ­6 ­5 ­4 ­3 ­2 ­1 1 2 3 4 5 6 ­1 ­2 ­3 ­4 8
9. 9. • Graph and find m and  b  of  y = 0 4 3 2 1 ­6 ­5 ­4 ­3 ­2 ­1 1 2 3 4 5 6 ­1 ­2 ­3 ­4 9
10. 10. Exercise # 11 & 12 # 1-12 10