1. Ch. 6 Review
Math 9

2. 3x-4 Variable, constant & coefficient? 3 is the coefficient
X is the variable
-4 is the constant

3. Creating equations from a table1 3 2 16 29 4 42 5 55
Create an equation to show how n and c are related.
How much is c increasing by? 13
How can you make this statement true?
n = c =3
13n = c = 3
13n -10 = c =3
Creating equations from a table

4. What is the 23rd value of c in this series from the previous page?
13n -10 = c
13(23) -10 = c
= c
289 =c

5. You should recognize this as the algebra that you were doing in Ch. 8
If c is equal to 211 what is the value of n?
13n -10 = c
13n – 10 = 211
13n =221
÷13 ÷13
n=17
You should recognize this as the algebra that you were doing in Ch. 8

6. This graph was created from the data points
This graph was created from the data points. Are you able to use values between the data points or beyond the pictured graph?

7. $ Charged
Number of People
Are you able to use values between the data points or beyond the pictured graph?

8. How is this graph useful
How is this graph useful? It tells you the Yellow Cab is cheaper for short distances but the Blue Cab is cheaper for long distances. This means interpreting graphs can save you money.

9. Extrapolation
Interpolation
Interpolation
Interpolation

10. BTW, linear graphs are used to show a relationship between 2 things.
We use variables to represent these things.

11. Onto the Review Assignment