A math lesson covering common core standard 8.S.P.3

1. Mmmmmm...food!!!! 8.S.P.3
Name_____________________________________________
Using the website http://illuminations.nctm.org/ActivityDetail.aspx?ID=146we are going to record data and
allow the computer to create the scatterplot for us. We will then see what we think is the line of best fit and
then allow the computer to plot the actual line of best fit. How close do you think we will be??
Enter the following data into the website.
What type of relationship is this data?_________________________
Was your class’s line of best fit close to the actual line of best fit?_________________
What is the equation of the line of best fit?_____________________
What is the y-intercept?___________________________
What does this mean? (use specific numbers and the words fat grams and
calories)___________________________________________________________________________________
__________________________________________________________________________________________
What is the slope?_______________________________
What does this mean? (use specific numbers and the words fat grams and
calories)___________________________________________________________________________________
__________________________________________________________________________________________

2. Equation: y = _________ x + __________
y represents_______________________
x represents_______________________
Using the equation above, if you ordered a sandwich that had 24 grams of fat, how many calories would you
expect to be in the sandwich (label your answer!)? Compare this to the graph on the board.
Using the equation above, how many fat grams would a sandwich with 510.56 calories in it have (label your
answer!)? Compare this to the graph on the board.