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If a relationship is linear, but not proportional, what formula do you use to write an equation for that relationship?

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Answer:

When it comes to graphing non-proportional linear relationships, it's helpful to recognize a couple of characteristics of the equation y = mx + b.

In this equation, m is equal to the slope of the line. That is, m is the rate of change of y with respect to x and is equal to the change in y divided by the change in x from one point on the line to another.

b is the y-intercept, or the point at which the line intercepts the y-axis on the graph.

Explanation:

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