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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Presentation transcript:

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

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

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

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

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

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

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

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 Find the slope and the y-intercpet.

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 Plot the point (0,b) when b is 1.

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 Use the slope to locate a second point on the line. m = = = 2121 rise run Move 2 units up Move 1 unit right

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 Draw a line through the two points.

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

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

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

GRAPH THESE EQUATIONS 1.y = x Y = 2x Y = -2x Y = x – 4 5.Y = -x – 3 6.Y = - x Y = 7x Y = 3x Y = - x Y = x