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Linear func x_y_int_
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Linear func x_y_int_

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Transcript

  • 1. Graphing Linear Equations
  • 2. Linear Equation An equation for which the graph is a line
  • 3. X-intercept Where the line crosses the x-axis
  • 4. X-intercept The x-intercept has a y coordinate of ZERO
  • 5. X-intercept To find the x- intercept, plug in ZERO for y and solve
  • 6. Slope Describes the steepness of a line
  • 7. Slope Equal to: Rise Run
  • 8. Rise The change vertically, the change in y
  • 9. Run The change horizontally or the change in x
  • 10. Finding Slope Step 1: Find 2 points on a line (2, 3) (5, 4) (x1, y1) (x2, y2)
  • 11. Finding Slope Step 2: Find the RISE between these 2 points Y2 - Y1 = 4 - 3 = 1
  • 12. Finding Slope Step 3: Find the RUN between these 2 points X2 - X1 = 5 - 2 = 3
  • 13. Finding Slope Step 4: Write the RISE over RUN as a ratio Y2 - Y1 = 1 X2 - X1 3
  • 14. Y-intercept Where the line crosses the y-axis
  • 15. Y-intercept The y-intercept has an x-coordinate of ZERO
  • 16. Y-intercept To find the y- intercept, plug in ZERO for x and solve
  • 17. Slope-Intercept y = mx + b m = slope b = y-intercept
  • 18. Step 1: Mark a point on the y-intercept
  • 19. Step 2: Define slope as a fraction...
  • 20. Step 3: Numerator is the vertical change (RISE)
  • 21. Step 4: Denominator is the horizontal change (RUN)
  • 22. Step 5: Graph at least 3 points and connect the dots

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