A project conducted by the Australian Federal Office of Road Safety asked people many questions about their cars. One question was the reason that a person chooses a given car, and the data are in the table below. Do the data show that the frequencies observed substantiate the claim that the reasons for choosing a car are equally likely? Test at the 3% level of significance. Reason for Choosing a Car reliability safetly performance comfort looks Total cost Observed Frequencies 92 69 56 29 46 26 318

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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.