Where do you buy your music these days? You say, "At a music store!", right? Well, maybe not. Demographers (people who study economic trends) say that throughout the 1990's there was a definite shift as to where music was purchased.
Year - Music stores ; Other stores
1990 - 69.8% ; 18.5%
1996 - 49.9% ; 31.5%
2000 - 42.4% ; 40.8%
So it's clear that music stores are not the overwhelming choice one might think.
Your tasks are to:
1.Determine the linear equation for each type of store for the first two years above.
2.Use those equations to 'predict' the percentage values for 2000.
--
I know that this problem uses linear equations and it shouldn't be that hard, but I don't know how to set up the equation.
I went through this section in my book again, and found the two types of linear equations:
Slope-Intercept form - y = mx + b
and
Standard form - Ax + By = C
The problem I'm having though is I have no clue how to set up the linear equations for the information from the first two years
Year - Music stores ; Other stores
1990 - 69.8% ; 18.5%
1996 - 49.9% ; 31.5%
2000 - 42.4% ; 40.8%
So it's clear that music stores are not the overwhelming choice one might think.
Your tasks are to:
1.Determine the linear equation for each type of store for the first two years above.
2.Use those equations to 'predict' the percentage values for 2000.
--
I know that this problem uses linear equations and it shouldn't be that hard, but I don't know how to set up the equation.
I went through this section in my book again, and found the two types of linear equations:
Slope-Intercept form - y = mx + b
and
Standard form - Ax + By = C
The problem I'm having though is I have no clue how to set up the linear equations for the information from the first two years
