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Math on the Mind

9 4. x = – , y = –3. Math on the Mind. Find each x- and y- intercepts of each equation. 1. 3 x + y = 12 2. –4 x – 3 y = 9 3 . Graph 2 x – 3 y = 6 using x- and y- intercepts. x = 4, y = 12. Applying Linear Functions. Unit 7, Day 8. Let’s Recap:.

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Math on the Mind

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  1. 9 4 x = – , y = –3 Math on the Mind Find each x- and y-intercepts of each equation. 1. 3x + y = 12 2. –4x – 3y = 9 3. Graph 2x– 3y= 6 using x- and y-intercepts. x = 4, y = 12

  2. Applying Linear Functions Unit 7, Day 8

  3. Let’s Recap: What is the slope of this graph? What is the y-intercept of this graph? http://ritter.tea.state.tx.us/student.assessment/resources/online/2006/grade11/math/11math.htm

  4. Try Another: What is the slope of this graph? What is the y-intercept of this graph? http://hotmath.com/help/gt/genericalg1/section_9_2.html

  5. Let’s Step it Up a Notch What is the slope of this line? What does the slope mean? What is the y-intercept of this line? What does the y-intercept mean? http://phschool.com/webcodes10/index.cfm?fuseaction=home.gotoWebCode&wcprefix=ata&wcsuffix=0603

  6. Height of a Burning Candle What is the slope of this line and what does it mean? What is the y-intercept of this line and what does it mean? http://phschool.com/webcodes10/

  7. Applying Linear Functions A health food store has 15 bottles of one vitamin in stock. The manufacturer ships these vitamins in boxes of 20. Write a linear function that relates the number of boxes to the total number of bottles of this vitamin at the store.

  8. After a hurricane, 1045 people came to a shelter.They are to be moved by bus to housing. Each bus can carry 55 passengers. • Assuming that every bus leaves with a full load, write a linear function that relates the number of busloads already gone to the number of people remaining at the shelter.

  9. Interpreting Graphs • Nathan began an exercise program that included sit-ups. He started out easy but gradually increased the number of sit-ups he was doing each day. The graph shows his progress.

  10. Students in the ninth-grade class drew the following graph to represent how much money would be in the class fund after selling sets of photos of their year’s activities. a. What does the slope and y-intercept of the graph mean for the given situation? The slope is 15; the class charged $15 per set of photos The y-intercept is 25, so they had $25 in the fund before selling photos.

  11. b. If the graph had the same slope but a y-intercept of 40, what could you conclude? There was $40 in the class fund instead of $25. c. If the graph had a slope of 12.5, what could you conclude? The students charged $12.50 per set of photos.

  12. Analyzing Linear Graphs • http://www.pearsonsuccessnet.com/snpapp/iText/products/0-13-368404-0/data/media/Ch06/academy123_content/wl-book-demo/ph-210.html

  13. Homework • Worksheet (front and back)

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