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Big Idea : -Solve systems of linear equations by graphs.

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Presentation on theme: "Big Idea : -Solve systems of linear equations by graphs."— Presentation transcript:

1 Big Idea : -Solve systems of linear equations by graphs.

2 Slope = m = There are 4 types of slopes: Remember to read the line from left to right. Positive slopeNegative slope

3 Zero Slope No Slope

4 Slope-Intercept Form y = mx + b m = slope b = y-intercept

5  A) y = 4x

6  B) y = -5x - 1

7  C) -2x + 4y = 6

8  Slope Formula

9  A) (0, 5), (-4, 9)  B) (-4, 8), (-4, 10)  C) (5, 1), (-5, -1)

10  Ax + By = C  (you can graph using the x- and y-intercepts)  3x + 4y = 12

11 The line through point (x 1, y 1 ) with slope m has the equation

12  A) slope = 4; ( 4, 6)  B) slope = -1; (0, -9)  C) slope = 0; (5, -3)

13  A) (-5, 4) and (0, 1)  B) (7, 8) and (6, -2)


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