Algebra review

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Algebra review

  1. 1. Slope Formula
  2. 3. Distance Formula
  3. 5. Midpoint Formula
  4. 7. Vertical Lines
  5. 8. • Think vertebra to help with visual •Undefined Slope! (cannot walk up walls) •Form x=#
  6. 9. Horizontal Lines
  7. 10. • Think horizon to help with visual •Slope = Zero (walking across left to right there is no incline or decline) •Form y=#
  8. 11. Slope-Intercept Form
  9. 13. Standard Form
  10. 14. • x and y on the same side •A is positive •No fractions
  11. 15. Point-Slope Form
  12. 16. • helps to find b and write the equation of a line all at once
  13. 17. Parallel Lines
  14. 18. • Do not intersect •Have the same slopes •Symbol: ||
  15. 19. Perpendicular Lines
  16. 20. • Intersect at a right angle/90 ⁰ •Have slopes that are opposite, reciprocals of each other (flip it and switch it) •Symbol:
  17. 21. Quadratic Formula
  18. 23. X-intercepts
  19. 24. • Also known as roots and zeros •Where the graph crosses the x-axis •Plug 0 in for y and solve for x •Answer: (#,0) as an ordered pair
  20. 25. y-intercepts
  21. 26. • Where the graph crosses the y-axis •Plug 0 in for x and solve for y •Answer: (0,#) as an ordered pair

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