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March 29, 2012. By the end of today: I will be able to find x-intercepts by graphing. Graph the following and determine the solutions. x 2 + x – 12 = 0. Graph the following and determine the solutions. x 2 + 7x = -10 *Must be y= or 0= to use calculator.

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March 29 2012

March 29, 2012

By the end of today: I will be able to find x-intercepts by graphing.



Graph the following and determine the solutions1
Graph the following and determine the solutions.

x2 + 7x = -10

*Must be y= or 0= to use calculator.


Graph the following and determine the solutions2
Graph the following and determine the solutions.

3x2 – 5x = 8

*Must be y= or 0= to use calculator.


Finding zeros in your calculator
Finding zeros in your calculator.

  • Find the zeros:

    16x2 – 12x – 18 = 0

    1. Press y= and enter in the function.



Finding zeros in your calculator2
Finding zeros in your calculator.

3. Press 2nd and then Trace.

4. Press #2 zero


Look at each zero individually
Look at each zero individually.

5. Find a point to the left of the zero and press enter.


Look at each zero individually1
Look at each zero individually.

6. Find a point to the right of the zero and press enter.


Look at each zero individually2
Look at each zero individually.

7. Press enter one more time.


Finding zeros in your calculator3
Finding zeros in your calculator.

8. Repeat steps 3-7 to find the other zero.



Finding zeros in your calculator5
Finding zeros in your calculator.

  • Find the zeros of y = 8x2 – 18x – 35


Assignment
Assignment

The worksheet! Quiz tomorrow…

review (factoring with t-chart)

finding zeros by graphing


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