1. Lesson 41.notebook January 08, 2013
Assignment:
1­­>Set 41 (odds) ­ Due Tomorrow (1/9)
2­­>Test #6 ­ Friday (1/11)

2. Lesson 41.notebook January 08, 2013
Lesson 41 Warm­Up:
1) Find the area of a circle with a diameter of 6m.
[Use 3.14 for pi]
2) Find the circumference of a circle with a
diameter of 6m. [Use 3.14 for pi]
3) Write 4,137,580,000 in scientific notation.
4) Simplify:(­2) ­ (­6) + (­4)
5) Simplify: (­2)(­6)
­4

3. Lesson 41.notebook January 08, 2013
Lesson 41:
*function – a mathematical rule that identifies a
relationship between 2 sets of numbers; for each input
there is only one output
*linear function – if all the input­output pairs of a function
fall on a line
*For a graph to be proportional, it must be:
­linear,
­­pass through (0, 0),
­­­and rises to the right

4. Lesson 41.notebook January 08, 2013
Examples ­ Lesson 41:
For the following functions, make a function table and use the values to
graph the equation. Last, determine if the function is proportional or not.
A) y = 3x
x y

5. Lesson 41.notebook January 08, 2013
B) y = 2x ­ 1
x y

6. Lesson 41.notebook January 08, 2013
C) y = 1/2x + 1
x y

7. Lesson 41.notebook January 08, 2013
D) y = ­2x
x y

8. Lesson 41.notebook January 08, 2013
E) Does x = 8 and y = 3 satisfy the function y = 1/4x + 1?