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Getting Started 39
You can interpret the resulting matrix as:
[1 0 5] represents 1X + 0Y = 5 or X = 5
[0 1 3] represents 0X + 1Y = 3 or Y = 3
The solution to this system of equations is X = 5, Y = 3.
Grouping
Grouping lets you make a copy of two or more variables and store them
in the Flash memory of the TI-84 Plus. This function is similar to “zipping”
a computer file and storing it. For example, suppose that you want to
save data you collected for time, temperature, humidity, and barometric
pressure because you may need to use the data for another assignment.
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