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Warm Up

Warm Up . 1) Graph the lines x = -4 and y = 2 on the same coordinate plane & label. 2) Write the equation in point slope form that goes through the point (-5, 3) with a slope of -2. 3) At the football game hotdogs cost $2 and sodas cost $1.50 and you have $12 to spend.

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Warm Up

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  1. Warm Up 1) Graph the lines x = -4 and y = 2 on the same coordinate plane & label. 2) Write the equation in point slope form that goes through the point (-5, 3) with a slope of -2. 3) At the football game hotdogs cost $2 and sodas cost $1.50 and you have $12 to spend. a) Write an equation in standard form. b) What is one combination of hotdogs and sodas that you could buy with $12?

  2. Lines of Best Fit

  3. Guess my age! On the following slides you will see photos of 10 famous people. Guess the celebrities age and write it on your worksheet. At the end you will be given the correct data and will use it all to create a line of best fit.

  4. Taylor LaughtnerMiley Cyrus

  5. President Obama lady gaga

  6. Kim kardashian nick jonas

  7. Justin bieberjenniferlopez

  8. Ashton kutcherjenniferaniston

  9. Here are the correct ages….Fill in on your worksheet! Taylor Laughtner 21 Miley Cyrus 21 President Obama 52 Lady Gaga 27 Kim Kardashian 33 Nick Jonas 21 Justin Bieber 19 Jennifer Lopez 44 Ashton Kutcher 35 Jennifer Aniston 44

  10. Scatter Plots Are graphs that relate two sets of data.

  11. Scatter Plots and Correlation Scatter plots have 3 types of correlation

  12. Trend Line Is an equation that shows the correlation of the data in a scatter plot. The line of best fit is the trend line (or equation) that best represents the data.

  13. Creating a Scatter Plot on your Graphing Calculator Directions: • STAT • 2. 1:Edit • enter x in L1, enter y in L2 • 2nd Y= • ENTER • Turn Scatter Plot 1 ON • Make sure the type is the 1st dots, Xlist: L1, Ylist: L2 • Zoom: 9:ZoomSTAT • GRAPH

  14. Creating a Trend line/Line of best fit **USE YOUR GRAPHING CALCULATOR!!!** Directions for creating a Line of Best Fit: 1: Create the scatter plot on your calculator. (You cannot create a line of best fit in your calculator if you have not created your scatter plot)

  15. 2. STAT 3. Using the right arrow key move the heading over to CALC 4. Using the down arrow key move down to number 4: LinReg (ax+b) 5. ENTER

  16. Using your directions: 1. Create the scatter plot for the data. – Determine the type of correlation for this data.2. Find the line of best fit for the data:

  17. Using your directions: 1. Create the scatter plot for the data. – Determine the type of correlation for this data.2. Find the line of best fit for the data:

  18. 1. Create the scatter plot for the data.2. Determine the correlation for this data 2. Find the line of best fit for the data: 3. Estimate the number of calories in a fast-food meal that has 14g of fat.

  19. Complete the rest of the worksheet

  20. Coming up… • HW tonight 4.5B tonight • Benchmark #2 – tomorrow • Quiz Friday! • Unit 4B Test – next Thursday, December 19th

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