Sept. 17 Class

Learning Goals: Understand how to vertical stretches affect the shape of a graph.

Today I handed back the formative quizzes.  Over the class did very well, good job!

Here are the solutions: Solutions to Formative Quiz 1

Then I took some time to discuss how vertical stretches effect the shape of a graph.  Vertical stretches are accomplished by multiplying a function by any value.  If the parent function is y = f(x), then the vertically stretched function is given by,

y = af(x)

All y values of the function are multiplied by the factor of a.

Here are the examples I worked out in class.  

You should now be able to complete the rest of the worksheets from last week.  If there are multiple transformations on a function, you must do the stretches first, then reflections then translations.

Homework Problems: Complete the rest of Functions Workshop and Vertical Stretches.