March 29 2012
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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

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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 solutions

Graph the following and determine the solutions.

x2 + x – 12 = 0


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 calculator1

Finding zeros in your calculator.

2. Press graph.


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 calculator4

Finding zeros in your calculator.


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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