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Modeling Real-World Relationships with Linear Equations
Many situations in the physical sciences, social sciences, and business involve a relationship between two variables that can be described by a linear equation. When real-world data is collected and plotted on a coordinate plane, the data points sometimes appear to fall along a straight line. In such cases, the equation of that line serves as a mathematical model of the relationship: once the equation is known, it can be used to predict the value of one variable based on the value of the other. To build such a model, one must be able to find the equation of the line — using whichever information is available (the slope and -intercept, the slope and a point, or two points on the line).
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Ch.4 Graphs - Elementary Algebra @ OpenStax
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Modeling Real-World Relationships with Linear Equations
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To build a linear mathematical model, an analyst must determine the equation of a line. According to the text, which of the following is NOT one of the three specific combinations of information that can be used to find this equation?
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