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Today: 4.2 Assignment 4.2 Check Up 4.3 Instruction Break Finish 4.3 Instruction Practice

Algebra. I submit to you that if a man hasn’t discovered something he will die for he isn’t fit to live. Martin Luther King. Today: 4.2 Assignment 4.2 Check Up 4.3 Instruction Break Finish 4.3 Instruction Practice. Outside show is a poor substitute for inner worth. Aesop. Assignment.

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Today: 4.2 Assignment 4.2 Check Up 4.3 Instruction Break Finish 4.3 Instruction Practice

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  1. Algebra I submit to you that if a man hasn’t discovered something he will die for he isn’t fit to live. Martin Luther King Today: • 4.2 Assignment • 4.2 Check Up • 4.3 Instruction • Break • Finish 4.3 Instruction • Practice

  2. Outside show is a poor substitute for inner worth. Aesop Assignment 4.2 Assignment: • 4.2 p214 #3-7, 10-22, 31-33 • C3 Progress Report • www.MrPelzer.com

  3. 7 6 5 4 3 2 1 -6 -4 -2 1 2 3 4 5 6 7 -2 -4 -6 CHECK UP 4.2 • Is (1, 3) a solution to the equation 3x + y = 0. • Rewrite the equation 5x + y = 4 in function form. • Rewrite the equation 5x – 2y = 4 in function form. • Use a table to graph 3x + y = 5 Nyet y = -5x + 4 y = -3x + 5

  4. 7 6 5 4 3 2 1 -6 -4 -2 1 2 3 4 5 6 7 -2 -4 -6 CHECK UP 4.2 • Is (-1, 3) a solution to the equation y = 3. • What are three ordered pairs that are solutions to x = 2? • Graph the equations x = 4 and y = 3. • Write the equations lines. Oui (2, 0), (2, 1), (2, 2) x = 4 y = 3 y = 6 x = -5

  5. Objectives: Find the intercepts of the graph of a linear equation. Graph the equation of a line using the x & y intercepts Pick appropriate scales for a graph Vocabulary: x-intercept, y-intercept Quick Graphs Using Intercepts 4.3

  6. 7 6 5 4 3 2 1 -6 -4 -2 1 2 3 4 5 6 7 -2 -4 -6 Quick Graphs Using Intercepts 4.3 Vocabulary: x-intercept – where a graph crosses the x-axis. y-intercept – where a graph crosses the y-axis. Vocabulary: x-intercept y-intercept (a, 0) (0, b) x-intercept (3, 0) (-5, 0) (-1, 0) None (3, 0) (0, 0) y-intercept (0, 6) (0, 4) (0, -2) (0, -5) None (0, 0) x y

  7. Find an x-Intercept 1 Example Find the x-intercept of the graphs of these linear equations: 3x – 4y = 24 5x + 2y = 20 -6x + 9y = 18 (8, 0) (4, 0) (-3, 0)

  8. Find a y-Intercept 2 Example Find the x-intercept of the graphs of these linear equations: 3x – 4y = 24 5x + 2y = 20 -6x + 9y = 18 Find the y-intercept of the graphs of these same linear equations. (8, 0) (4, 0) (-3, 0) (0, -6) (0, 10) (0, 2)

  9. 7 6 5 4 3 2 1 -6 -4 -2 1 2 3 4 5 6 7 -2 -4 -6 Make a Quick Graph 3 Example Graph the equation: 3x + 2y = 12

  10. 7 6 5 4 3 2 1 -6 -4 -2 1 2 3 4 5 6 7 -2 -4 -6 Make a Quick Graph 3 Example Graph the equation: 2x + 5y = -10

  11. 7 6 5 4 3 2 1 -6 -4 -2 1 2 3 4 5 6 7 -2 -4 -6 Make a Quick Graph 3 Example Graph the equation: 3x – 2y = 9

  12. 7 6 5 4 3 2 1 -6 -4 -2 1 2 3 4 5 6 7 -2 -4 -6 Make a Quick Graph 3 Example Graph the equation: y = -3x + 6

  13. 7 6 5 4 3 2 1 -6 -4 -2 1 2 3 4 5 6 7 -2 -4 -6 Make a Quick Graph 3 Example Graph the equation: y = 2x + 7

  14. 50 10 -50 -10 10 50 -50 Choose Appropriate Scales 4 Example Graph the equation: 2x + 3y = 60 Scales

  15. 500 100 -500 -100 100 500 -500 Choose Appropriate Scales 4 Example Graph the equation: 4x + y = 600

  16. Real World Linear Models 5 Example Student Council is selling tickets to a fall carnival. They would like to sell $2000 worth. If the cost of a student ticket is $5 and the cost of an adult ticket is $10, how many of each kind could they sell to reach their goal? 5x + 10y = 2000 400 student tickets only 200 adult tickets only

  17. ` Real World Linear Models 5 Example You are organizing the annual spaghetti dinner to raise funds for a zoo. Your goal to sell $1500 worth of tickets. Assuming 200 adults and 100 students will attend the dinner, how much should you charge for an adult ticket and for a student ticket. 200x + 100y = 1500 $7.50 for an adult ticket $15.00 for a student ticket

  18. Assignment 4.3 I submit to you that if a man hasn’t discovered something he will die for he isn’t fit to live. Martin Luther King Assignment: • 4.3 p225 #14-55, 60-63 USE GRAPH PAPERUSECOLORS • C3 Progress Reports

  19. REMEMBER 4 TO VOTE Pi IN THE FACE ! MR. PELZER AND A

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