Ch 6 Review Math 9 3 x4 Variable

Ch. 6 Review Math 9

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

n c 1 3 2 16 3 29 4 42 5 55 Create an equation to show n and c are related. How much is c increasing by? 13 How can you make this statement true? n=c 13 n = c 13 n -10 = c 1=3 13 = 3 13 -10 =3 Creating equations from a table

What is the 23 rd value of c in this series from the previous page? 13 n -10 = c 13(23) -10 = c 299 -10 = c 289 =c

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

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

Money Charged for Tickets 700 600 500 $ Charged 400 300 200 100 0 0 1 2 3 4 5 6 Number of People Are you able to use values between the data points or beyond the pictured graph? 7 8

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.

Extrapolation Interpolation

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

Onto the Review Assignment