4. The gain in weight of 19 female rats were measured where 12 were fed on a high protein diet and 7 were fed on a low protein diet. The table below shows the weight of 19 rats after the diet was maintained. State that is there any difference in the weight of the rats for having different diets. High protein Low protein 134 70 146 118 104 101 119 85 124 107 161 132 107 94 83 113 129 97 123

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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.