Positive and negative constant of proportionality

 

Observations

-Goes down by 12 each time

-spend $12 each week

-money to time 

-Linear- consistent amount

 Rules

144- n x 12 = amount of $

-n x 12 + 144 = amount of $

12^2- n x 12

Graph

Starts at the top of the y-axis and goes down 

y is bigger than x

Positive and Negative Constant of Proportionality

      +                                                          -

n x constant                                  data pts go down

graph increases                            start at top of y-axis

indep and depen go up                -n x constant

                                                     week goes up (ind), $ goes down (dep)