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WARM UP Evaluate 1.3x + y for x = 4 and y = 3 2.x² + 7 for x = 7 5 Minutes Remain

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WARM UP Evaluate 1.3x + y for x = 4 and y = 3 2.x² + 7 for x = 7 4

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WARM UP Evaluate 1.3x + y for x = 4 and y = 3 2.x² + 7 for x = 7 3

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WARM UP Evaluate 1.3x + y for x = 4 and y = 3 2.x² + 7 for x = 7 2

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WARM UP Evaluate 1.3x + y for x = 4 and y = 3 2.x² + 7 for x = 7 1

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WARM UP Evaluate 1.3x + y for x = 4 and y = 3 2.x² + 7 for x = 7 0

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4.7 Graphing Lines Using Slope- Intercept Form SLOPE-INTERCEPT FORM OF THE EQUATION OF A LINE The linear equation y = mx + b is written in slope-intercept form, where m is the slope and b is the y-intercept. y = mx + b slope y-intercept

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4.7 Graphing Lines Using Slope- Intercept Form Graph an Equation in Slope-Intercept Form EXAMPLE 1 Graph an Equation in Slope-Intercept Form Graph the equation y = 2x + 1 1 Find the slope and the y-intercpet.

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4.7 Graphing Lines Using Slope- Intercept Form Graph an Equation in Slope-Intercept Form EXAMPLE 1 Graph an Equation in Slope-Intercept Form Graph the equation y = 2x + 1 2 Plot the point (0,b) when b is 1.

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4.7 Graphing Lines Using Slope- Intercept Form Graph an Equation in Slope-Intercept Form EXAMPLE 1 Graph an Equation in Slope-Intercept Form Graph the equation y = 2x + 1 3 Use the slope to locate a second point on the line. m = = = 2121 rise run Move 2 units up Move 1 unit right

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4.7 Graphing Lines Using Slope- Intercept Form Graph an Equation in Slope-Intercept Form EXAMPLE 1 Graph an Equation in Slope-Intercept Form Graph the equation y = -3x + 2 4 Draw a line through the two points.

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4.7 Graphing Lines Using Slope- Intercept Form Practice # 1: Graph y = 5x - 3

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4.7 Graphing Lines Using Slope- Intercept Form Practice # 2: Graph y = x + 3

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4.7 Graphing Lines Using Slope- Intercept Form Practice # 3: Graph y = x + 6 1212

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GRAPH THESE EQUATIONS 1.y = x + 5 2.Y = 2x - 4 3.Y = -2x + 3 4.Y = x – 4 5.Y = -x – 3 6.Y = - x + 2 7.Y = 7x + 1 8.Y = 3x + 8 9.Y = - x + 2 10.Y = x - 5 4343 2323 1212

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