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College Algebra K /DC Wedne sday, 23 October 2013. OBJECTIVE TSW prepare for the TSI test. ASSIGNMENT DUE NOW (if you have not yet turned in) WS TSI Review #1  wire basket ASSIGNMENT DUE BY END OF PERIOD WS TSI Review #2 TSI TEST

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college algebra k dc wedne sday 23 october 2013
College Algebra K/DCWednesday, 23 October 2013
  • OBJECTIVETSW prepare for the TSI test.
  • ASSIGNMENT DUE NOW (if you have not yet turned in)
    • WS TSI Review #1  wire basket
  • ASSIGNMENT DUE BY END OF PERIOD
    • WS TSI Review #2
  • TSI TEST
    • If you need to take it but do not take it at JV, you will need to go to Lone Star College and arrange to take it on your own.
slide2
North America Nebula

Pelican Nebula

refreshers
Refreshers
  • Equations of Lines
    • Slope-intercept Form:

y = mx + b

where m is the slope and b is the y-intercept.

      • Examples
      • What is the equation of the line with slope –4 and y-intercept 6?
refreshers1
Refreshers
  • Examples
  • What is the equation of the line that contains the points whose coordinates are (4, 1) and(–2, 5)?

First, find the slope.

Use the slope and one of the points to find b and write the equation. using (4, 1):

y = mx + b

refreshers2
Refreshers
  • Equations of Lines (continued)
    • Standard Form:

Ax + By = C

where A, B, and C areintegers.

      • Example

What is the slope of the line whose equation is5x – 3y + 6 = 0?

Put into slope-intercept form to find the slope.

refreshers3
Refreshers
  • Factoring
    • ALWAYS look for a GCF first!
    • Four terms:
      • Grouping!
    • Look for a pattern.
      • Difference of squares:
      • Difference of cubes:
      • Sums of cubes:
      • Perfect square trinomial:
refreshers4
Refreshers
  • Solving a quadratic equation: Square root property.
    • Use solution sets!
    • Examples
    • Solve:
refreshers5
Refreshers
  • Solving a quadratic equation: Square root property.
    • Use solution sets!
    • Examples
    • Solve:
reminders
Reminders
  • Solving a quadratic equation: Zero factor property.
    • Example

Solve:

reminders1
Reminders
  • Solving a quadratic equation by the quadratic formula.
    • Example

Solve:

assignment
Assignment
  • TSI WS #2
    • Due at the end of the period today.
  • TSI WS #3
    • Due at the beginning of the period on Friday.
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