Open Middle®
Directions: Using the integers 0-9 (without repeating any number), create 4 points that could generate a line of best fit with the equation y=-x+8.
(___,___) (___,___) (___,___) (___,___)
Hint
What is the relationship between points and a line of best fit?
Answer
There are many possible solution combinations. One answer looks like
Another answer would be (2,8) (0,6) (5,1) (7,3)
What are some other sets of integer pairs?
Question about the 2 solutions. When I type y = -1 + 8 into desmos and then plot both solutions, all 4 points are symmetrically spaced around this line. But for both solution sets, if I tell desmos to create the line of best fit y1 ~ mx1 + b I’m given y = -0.6x + 7.4 and y = -0.7 + 7 for the 2 data sets. Can anyone explain why that is?