2017 function rule.notebook
March 23, 2017
Do Now
• Copy down your HW for tonight
• Take out your HW from last night
• Warm Up Questions:
Function or Not?
x
y
­1
­2
3
4
1
2
4
6
8
For the function rule given, find the input value
for each output and the output value for each
input.
Multiply by 2
Input
Output
and then add 3
Input
Output
Domain:
Range:
Rule:
2
10
17
29
41
2017 function rule.notebook
March 23, 2017
Determining the RULE of the function helps us predict outputs!
What is the rule?
Input
Output
3
7
5
11
7
15
10
21
Write the function rule.
x
y
2
9
4
11
6
13
7
14
Does this remind you of anything?
How can we find the rule?
2017 function rule.notebook
March 23, 2017
Find the rule!
x
y
1
4
2
7
3
10
4
13
Fill in each table. In the row with x as the input, write a rule as an algebraic expression for the output. Then complete the last row of the table using the rule.
Input
Output
1
4
2
9
x
4
2017 function rule.notebook
March 23, 2017
Fill in each table. In the row with x as the input, write a rule as an algebraic expression for the output. Then complete the last row of the table using the rule.
Input
Output
10
5
20
10
x
40
Find the Function Rule.
1. Find the y ­ intercept.
2. Find the slope of the line.
3. Write the rule.
4. Check points! 2017 function rule.notebook
March 23, 2017
Find the Function Rule.
1. Find the y ­ intercept.
2. Find the slope of the line.
3. Write the rule.
4. Check points! Find the Function Rule.
1. Find the y ­ intercept.
2. Find the slope of the line.
3. Write the rule.
4. Check points! What will y be when x is 10?
2017 function rule.notebook
March 23, 2017
This is a function. It is not linear... What is the rule?
Input
Output
3
10
5
26
7
50
10
101