Analyzing Data using Line Graphs Slope & Equation of a Line.

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Presentation transcript:

Analyzing Data using Line Graphs Slope & Equation of a Line

Slope  Rise over Run m = y 2 – y 1 x 2 – x 1 (3, 5) & (1, 4)

You Try!!! m = y 2 – y 1 x 2 – x 1 (2, 3) & (1, 5) (-2, -5) & (1, 4)

Equation of a Line y = mx + b Slope y - intercept

How to find line of best fit 1.) Find slope using m = y 2 – y 1 x 2 – x 1 2.) Choose one point and plug in for “x” and “y” in the equation y = mx + b 3.) Solve for b 4.) Plug m and b into y = mx + b

Find line of best fit that include the points (3, 2) and (6, 1)

You try!!! (3, -2) & (5, 3)

You try!! (4, -2) & (7, 5)

Works Cited arris/psnotes/physics/02graphing.ppt -