Linear equation construction and prediction

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Objective - To graph linear equations using the slope and y-intercept.

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Presentation transcript:

Linear equation construction and prediction

Notes Plot points Find slope Find y-intercept using y=mx + b (4,8) (-2,5)

The table shows the number of Sunday newspapers in the U.S. Make a scatter plot of the data and draw a best fit line Predict number of newspapers for 2014. Year # of newspapers 2001 900 2002 925 2003 950 2004 975 2005 1000 2006 1025

The table shows the sales of athletic equipment. Make a scatter plot of the baseball/softball sales. Use the line and predict sales for 2015. Year Baseball/ softball 1999 300 2000 305 2001 310 2002 315 2003 320 2004 325 2005 330

The table shows the number of times a person breathes per minute. Create a scatterplot from the table and draw a best fit line. Use line to create an equation. Use equation and predict how many breaths you would take in 20 minutes. Minutes Breathes 1 20 2 40 4 80 8 160

The table shows how much a sports athlete made each year. Make a scatter plot and draw a line of best fit. Create an equation from your line. Make a prediction for how much they would make in 2009. Yrs since 1999 Amount of contract (millions) 1 7 2 8 3 9 4 10 5 11 6 12

Use the graph that shows the number of fan clubs in the U. S Use the graph that shows the number of fan clubs in the U.S. for years following 1999. 1.Write an equation in slope-intercept form. 2. Use the equation and predict number of fan clubs in the U.S. in 2012.

Use the graph that shows the amount of book sales purchased online for several years following 1997. Write an equation in slope-intercept form. Use equation to predict sales of online books in 2013.

Use the line showing the amount spent by the government on space and other technology for the years following 1998. Write an equation in slope-intercept form. Predict how much will be spent in 2016.

According to census, life expectancy in 2000 is 77. 0 yrs According to census, life expectancy in 2000 is 77.0 yrs. In 2010 it was 78.5yrs. Write and equation in slope-intercept form. Use equation and predict life expectancy in 2015.