Download Deductive Reasoning - Blair Community Schools

Geometry 2.2-2.3 Notes
September 28-29, 2015
Deductive Reasoning:
The process of showing that certain
statements follow logically from
agreed upon assumptions and proven
facts.
How can you tell the difference between
Inductive and Deductive Reasoning?
"patterns"
"looking at data"
"make a conjecture"
Did you use a Definition?
Did you use a Fact?
"justify"
"prove"
Geometry 2.2-2.3 Notes
September 28-29, 2015
2.3 Notes
Example 1: 20 , 27 , 34 , 41 , 48 , 55 , ....
Find the 200th number in the sequence.
Example 2: 7 , 2 , -3 , -8 , -13 , -18 , ...
Find the 400th term (the 400th number in
the sequence)
Geometry 2.2-2.3 Notes
September 28-29, 2015
"Recipe for finding linear function rules"
1. Figure out the increment between the
numbers. (Needs to be consistent if
function rule is linear.)
2. The increment becomes the
coefficient (number in front of variable)
of "n"
3. Find the "Zeroth" term. (Constant
term.)
4. Test function rule with stuff you
know.
5. Find the term you are looking for.
Linear Function Rule:
when the increment of the
sequence stays a consistent
number.
"Recipe" for finding Linear Function Rules:
Geometry 2.2-2.3 Notes
September 28-29, 2015
2.2: p. 103-105: 1-4, 6, 7, 9, 12-15, 20-29
Quiz
2.3: p. 109-111: 1-7 (Copy the Tables)
2.4: p. 115-117: 1-6 , 11-19