sponge: nancy started a delivery service. she charges $8 per order plus $0.15 per mile to deliver....
TRANSCRIPT
Sponge: Sponge:
Nancy started a delivery service. She charges $8 Nancy started a delivery service. She charges $8 per order plus $0.15 per mile to deliver. How per order plus $0.15 per mile to deliver. How much will she charge for delivering 12 miles much will she charge for delivering 12 miles away?away?
A.A.$9.80 C. $8.30$9.80 C. $8.30
B.B.$9.30 D. $8.15$9.30 D. $8.15
Thursday, January 22, 2009Thursday, January 22, 2009Standards: Standards: M8A3c. M8A3c. Distinguish between relations that are functions and those that Distinguish between relations that are functions and those that are not functions. are not functions.
Function FactsFunction Facts• Definition: A relation in which each first value
(x) is paired with one and ONLY one second value (y).
•X value cannot be repeated in a table, mapping, or set of ordered pairs.
•Must pass the Vertical Line Test when graphed.Crosses at ONLY one Point each time.
m c
1 8.15
2 8.30
3 8.45
4 8.60
m c
123
8.158.458.30
Equation Mapping
Table
Ordered Pairs
m c
1 8.15
2 8.30
3 8.45
4 8.60
m c
123
8.158.458.30
Equation Mapping
Table
Ordered Pairs
m c
1 8.15
2 8.30
3 8.45
4 8.60
m c
123
8.158.458.30
Equation Mapping
Table
Ordered Pairs
m c
1 8.15
2 8.30
3 8.45
4 8.60
m c
123
8.158.458.30
Equation Mapping
Table
Ordered Pairs
Is this a function?
Question 1: Is the graph shown below that of a function?
Is this a function?
Y = x + 6
Is this a function?x y
780-7-8
04964
Is this a function?
• (0, 3)
• (1, 8)
• (4, 8)
• (6, 3)
Is this a function?
x y
2 6
3 9
2 5
3 6
Work PeriodWork Period
• Each group has 6 Each group has 6 examples.examples.
• Make a two column Make a two column table on your table on your construction paper. construction paper.
• Label the columns as Label the columns as Is a Function and Is Is a Function and Is Not a FunctionNot a Function.
• Organize your Organize your examples and glue examples and glue them on the them on the construction paper.construction paper.
• Using the index cards Using the index cards explain why or why explain why or why not. Post it on your not. Post it on your construction paper.construction paper.