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Unformatted text preview: 1.2 Distance Formula
Friday, August 20, 2010
5:48 AM Remember whiteboard pens on Monday!
Also, there will be a homework check on Monday. Agenda:
2. Lesson: 1.2 Distance Formula
Is the following relation a function? List the excluded value(s). List the domain and range. Is the
following relation a function? _____________________________________
Lesson: 1.2 Distance Formula
Goal: Define and use the distance formula
Let's derive the distance formula.
Remember the Pythagorean Theorem? Ch_1 Page 1 Distance Formula: Given two points,
two points is and , the distance between the _______________________________________
A necessary skill review
Do you remember how to simplify radicals? I like to find perfect squares factors.
Simplify the radicals. _______________________________________
Find the distance between the given pairs of points. (I will expect exact answers,
possibly with simplified radicals, not decimal approximations.)
(1,1),(4,5) Ch_1 Page 2 _______________________________________
Find the equation of the circle that contains the given point P and has the center at
Do you remember the equation of a circle (with center at origin)?
P(3,-6) P(-3,4) A couple of reminders
* If I give you time in class to start the homework, do so! I will not tolerate people
* You will get your bathroom passes on Monday. I will be strict with them. Don't
lose them or it will penalize your grade. And yes, leaving class now still counts. Ch_1 Page 3 ...
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