The graph of the line models the amount of memory remaining on Julia's mp3 player as she adds songs to the device. In this situation, what does the slope of the line represent? Songs on Julia's MP3 Player 2000 1500 1000 Coca-a 500 50 100 150 200 250 300 350 400 450 500 Number of Songs Stored O A The memory remaining decreases at a rate of approximately 4.2 MB per song. OB The memory remaining increases at a rate of approximately 4.2 MB per song, OC The memory remaining decreases at a rate of approximately 42 MB per song O D The memory remaining increases at a rate of approximately 42 MB per song. Amount of Memory Remaining (MB)

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.