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Graphing

Graphing. Graphing (the basics). X-axis: Horizontal; Independent variable Y-axis : Vertical; Dependent variable Title : Dependent variable vs. Independent Variable Slope = Rise/Run or ∆y/ ∆x Formula of a line : y= mx+b m = slope b = y-intercept. Best fit line.

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Graphing

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  1. Graphing

  2. Graphing (the basics) • X-axis: Horizontal; Independent variable • Y-axis: Vertical; Dependent variable • Title: Dependent variable vs. Independent Variable • Slope = Rise/Run or ∆y/ ∆x • Formula of a line: • y= mx+b • m = slope • b = y-intercept

  3. Best fit line • If line looks straight, then do not connect the dots, draw a line that is the average of all of the dots Dependent Dependent vs. Independent Variable (Unit) Independent Variable (unit)

  4. How to calculate Slope • Find two points on your line • Take the difference between the y-values • Take the difference between the x-values • Divide the y difference by the x difference For example… • (5, 4) and (10, 7) • 7-4 = 3 • 10-5 = 5 • 3/5 or 0.6

  5. Types of Graphs Direct (as one increases; the other increases proportionally) Indirect (as one increases; the other decreases proportionally) Inverse (as one increases, the other decreases substantially) No Relationship

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