1 Rate of Change and Slope ALGEBRA 1 LESSON 6-1 6-1 2 Rate of Change and Slope ALGEBRA 1 LESSON 6-1 6-1 3 Rate of Change and Slope ALGEBRA 1 LESSON 6-1 1. Find the rate of change for the data in the table. 2. Find the rate of change for the data in the graph. 3. Find the slope of the line. 15 per ticket 4 3 400 calories per hour 4. Find the slope of the line through (3 2) and (2 5). 6-1 4 Rate of Change and Slope ALGEBRA 1 LESSON 6-1 undefined 0 6-1 5 Slope-Intercept Form ALGEBRA 1 LESSON 6-2 5. Write an equation for the line. m 2 b 0 6. Graph y x 3. y 0.5x 1 6-2 6 Standard Form ALGEBRA 1 LESSON 6-3 x 4 y 12 horizontal vertical 5 2 5x 2y 6 or 5x 2y 6 6-3 7 Point-Slope Form and Writing Linear Equations ALGEBRA 1 LESSON 6-4 6-4 8 Parallel and Perpendicular Lines ALGEBRA 1 LESSON 6-5 3 2 1. Find the slope of a line parallel to 3x 2y 1. 2. Find the slope of a line perpendicular to 4x 5y 7. Tell whether the lines for each pair of equations are parallel perpendicular or neither. 3. y 3x 1 y x 2 4. y 2x 5 2x y 4 5. y x 1 2x 3y 6 6. Write an equation of the line that contains (2 1) and is perpendicular to y x 3. 5 4 perpendicular neither 2 3 parallel y 2x 3 6-5 9 Scatter Plots and Equations of Lines ALGEBRA 1 LESSON 6-6 1. Graph the data in a scatter plot. Draw a trend line. 2. Write an equation for the trend line. 3. Predict the number of households in the U.S. in 2005. (Use 105 for x.) 4. Use a calculator to find the line of best fit for the data. 5. What is the correlation coefficient y 86.8 1.3(x 85) about 112.8 million households y 1.366x 29.91 0.9943767027 6-6
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