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Linear Functions

In this video, Mahalo math expert Allison Moffett explains linear equations. Functions are just equations that express a specific relationship between two variables. To express this algebraically, write f(x)=ax+b. You may think that this looks a lot like slope-intercept form (y=mx+b), and you'd be right. Slope-intercept form is an example of a linear function. Let's say you have the function f(x)=7x-2, and you want to evaluate it at x=8. All you need to do is plug in an 8 wherever you see an x. That leaves you with f(8)=7(8)-2. Multiply seven and eight to get 56. Subtract two, and you're left with 54â€"your answer. Read more by visiting our page at: http://www.mahalo.com/linear-functions/