Algebra 1 power pointlr

488 views

Published on

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
488
On SlideShare
0
From Embeds
0
Number of Embeds
2
Actions
Shares
0
Downloads
3
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Algebra 1 power pointlr

  1. 1. Algebra 1<br />Chapter 5<br />
  2. 2. Slope<br />Slope is represented by the letter m<br />Rise<br />Run<br />Slope = <br />
  3. 3. Where can slope be found in the world?<br />
  4. 4. Construction<br />
  5. 5. Recreation<br />
  6. 6. Sports<br />
  7. 7. Engineering<br />
  8. 8. Quick Reminder<br />Lines rising from left to right have a positive slope<br />
  9. 9. Lines falling from left to right have a negative slope<br />
  10. 10. 0 slope<br />
  11. 11. No Slope= undefined<br />
  12. 12. Finding Slope by counting squares<br />run<br />rise<br />Rise= 3<br />Run= 2<br />3<br />2<br />Slope=<br />
  13. 13. Practice<br />What is the slope? <br />Find the slope by counting rise over run.<br />
  14. 14. Answer to practice<br />run<br />rise<br />3<br />1<br />Slope=<br />or 3<br />
  15. 15. More Practice<br />What is the slope? Count rise over run.<br />
  16. 16. Answer<br />5<br />4<br />Slope=<br />-<br />
  17. 17. Calculating slope<br />Requires two points (x ,y ) (x ,y )<br />m=<br />2<br />2<br />1<br />1<br />y - y <br />x - x <br />2<br />1<br />2<br />1<br />
  18. 18. Example<br />(3, -2)<br />(1, -4)<br />y -y<br />(x ,y )<br />(x ,y )<br />-4-1<br />1-3<br />-5<br />-2<br />5<br />2<br />1<br />2<br />1<br />1<br />2<br />2<br />=<br />=<br />x - x<br />(3 , -2)<br />(1 , -4)<br />1<br />2<br />
  19. 19. Slope Intercept Form<br />y= mx+b<br />m= slope<br />b= y intercept<br /> slope y intercept<br />
  20. 20. y intercept<br />The y intercept is where the line crosses the <br />y axis. y axis <br />y intercept <br /> y intercept = 2<br /> x axis <br />
  21. 21. y intercept<br />y intercepts can be positive<br />or negative numbers <br />y axis<br />x axis<br />y intercept= +1<br />y axis<br />x axis<br />y intercept= -2<br />
  22. 22.
  23. 23. Graphing Slope Intercept Form<br />Step one: graph y intercept on y axis<br />Step two: from that point use slope to graph second point<br />Step three: connect the points<br />You have now graphed a line using slope-intercept form.<br />
  24. 24.
  25. 25.
  26. 26. Point-slope Form<br />y- y = m(x-x )<br />1<br />1<br />
  27. 27. Point slope form requirements<br />You must have one point and the slope of the line in order to write in point-slope form. <br />You then substitute the slope in for the letter m and the numbers from the point in there correct spot.<br />
  28. 28.
  29. 29. Prentice Hall Algebra I Volume 1 Teacher’s Edition Pearson Education Inc., <br />2011 (p.311). <br />Prentice Hall Algebra I Volume I Teacher’s Edition Teacher Resources Chapter 5, Pearson Education Inc., 2011 (Practice Forms) <br />This citation is for slides (8-28). <br />I <br />

×