(d) standardized tests 6.1 Displaying Relationships: Scatterplot 2. Figure 6.22 shows the calories and salt content (in milligrams of sodium) in 17 brands of beef hot dogs. Describe the overall pattern (form, direction, and strength) of these data. In what way is the point marked A unusual? 600 500 400 300 200 A 100 100 120 140 160 Calories per hot dog Figure 6.22 A scatterplot of sodium content versus 180 200 calories in beef hot dogs, for Exercises 2 and 13. 3. Figure 6.23 is a scatterplot of data from the World Banl Sodium per hot dog (milligrams)

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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.