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Published byJean Lyde Modified over 3 years ago

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Take 3 sheets of paper/ fold softly (no creases) Stagger the paper so that you have 5 tabs Stagger the 3 like this Then take and fold down the middle So that it staggers as such

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Graphing and Writing Equations of a Line Slope Intercept Form Standard Form/ x & y intercepts Solving for “y” Point-Slope Formula (given point & slope)Writing Equation Given 2 pointsWriting Equations of Horizontal/Vertical Lines

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3 Slope Intercept Form Right side once foldable is open

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Right side once foldable is open to standard tab x & y Intercepts (#, 0) (0, #) x y x y Substitute: 5x – 6y = 30 x-int.y-int. y=0x = 0 5x – 6(0) = 30 5(0) – 6y = 30 5x = 30-6y = 30 5 5 -6 -6 x = 6y = -5 (6, 0) graph points(0, -5) Ex: 3x + y = 9 3x + 0 = 9 3(0) + y = 9 3x = 9 y =9 3 3 x-int (3,0) y-int (0,9) Can graph (3,0) use slope to graph other points since (0,9) is not on graph Standard Form/ x & y intercepts Solving for “y”

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Left side once foldable is open to standard tab Standard Form/ x & y intercepts Solving for “y”

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Right side once foldable is open to Point – Slope tab

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Left side once foldable is open to Point – Slope tab

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Right side once foldable is open to Writing Equation Given 2 points Writing Equation Given 2 points

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Left side once foldable is open to Writing Equation Given 2 points Writing Equation Given 2 points

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Right side once foldable is open to Writing Equation of Horizontal/ Vertical Lines Write an equation of a horizontal line through point (-2, 5) Hint graph the point first m = 0 b = 5 can make a “z” with horizontal line y = 5 Write an equation of a vertical line through (-2, 5) The line does not cross the y-axis therefore; there is no y-int. (b) m = undefined x = -2 Writing Equations of Horizontal/Vertical Lines U ndefined

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Left side once foldable is open Given a graph write the equation **Hint (create a table) x y -1 2 0 2 1 2 y does not ever change y = mx + b m = 0 b = 2 y = 0 x + 2 y =2 x y 4 -1 4 0 4 1 there is not y-int (b) therefore; no y = x = 4 Writing Equations of Horizontal/Vertical Lines

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Do Now 1. Solve the equation 2. Find the x-intercept and the y-intercept of the equation +4x 2 + 5x = -8 -2 5x = -10 5 x = -2 5x + (0) = 25 5x = 25 x.

Do Now 1. Solve the equation 2. Find the x-intercept and the y-intercept of the equation +4x 2 + 5x = -8 -2 5x = -10 5 x = -2 5x + (0) = 25 5x = 25 x.

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