Which two points did you use to draw the line of best fit?
(60.5, 61), and points (70, 71)
Write the equation of the line passing through those two points using the point-slope formula
y - y1= m(x - x1). Show all of your work. Remember to find the slope of the line first.
Using the equation that you found in question 2, approximately how tall is a person whose arm span is 66 inches?
According to your line of best fit, what is the arm span of a 74-inch-tall person?

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Just help on the last three

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