Week 9 in prec 11

Next week we will have a quiz in quadratic function, so this week’s main job is to review the knowledge and build them up.

in the picture told us the importance of the three forms:

Standard form(vertex form), general form and the factored form.

We can get a lot of message from these three forms, we can get the vertex from the standard form, the x-intercept from the factored form, and the y-intercept from the general form. We can also change them into each one to get the more message.

After that, we can lists the messages we get and then to do the problems, just remember the vertex is the most important , but not always, if you can find the intercepts, that’s also work.

And the complete the square! This help us change the three forms into each other.

 

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