The salvage value for a paint machine can be estimated by the equation V= 120000 - 1250t Where t equals the number of years and V equals the value of the machine after t years. If V is graphed on vertical axis and t on horizontal axis then: i) Identify the slope of the equation and interpret it. ii) Identify the V-intercept and t-intercept and interpret.

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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.