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Math on the Mind

7 5. –. Math on the Mind. 2. Find the slope of the line. 1. Find the rate of change for the data in the graph. 4 3. 3. Find the slope of the line through (3, –2) and (–2, 5). 400 calories per hour. Slope-Intercept Form of a Line. Unit 7, Day 6. Definitions:.

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Math on the Mind

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  1. 7 5 – Math on the Mind 2.Find the slope of the line. 1.Find the rate of change for the data in the graph. 4 3 3.Find the slope of the line through (3, –2) and (–2, 5). 400 calories per hour

  2. Slope-Intercept Form of a Line Unit 7, Day 6

  3. Definitions: • Slope: “rise over run” • Y-intercept: the y-coordinate of the point where a line crosses the y-axis

  4. Slope-Intercept Form of a Linear Equation Slope y-intercept

  5. mx+b = 2x – 3 = Slope-Intercept Form What are the slope and y-intercept of y = 2x – 3? slope = 2; y-intercept = –3.

  6. Practice: • Find the slope and y-intercept of each equation. • y = -2x + 1 • Slope: -2 • Y-intercept: 1 • y = -4/5 x • Slope: -4/5 • Y-intercept: 0

  7. 2 5 y = mx + b 2 5 y = x + 4 Slope-Intercept Form Write an equation of the line with slope and y-intercept 4.

  8. Writing an Equation From a Graph • http://www.pearsonsuccessnet.com/snpapp/iText/products/0-13-368404-0/data/media/Ch06/academy123_content/wl-book-demo/ph-208.html

  9. Practice: • Write the equation of each line.

  10. More Practice

  11. Video Lesson: • Graphing using slope-intercept form

  12. Step 1: The y-intercept is –2. So plot a point at (0,–2). Slope-Intercept Form 1 3 Graph y = x – 2.

  13. Step 2: The slope is . Use slope to plot a second point. 1 3 Slope-Intercept Form 1 3 Graph y = x – 2.

  14. Step 3: Draw a line through the two points. Slope-Intercept Form 1 3 Graph y = x – 2.

  15. Homework Page 320 #2-38 even

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