By, Mrs. Muller Functions.

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Presentation transcript:

By, Mrs. Muller Functions

Key Vocabulary Function: a relationship that assigns one output value to each input value. Function rule: an equation that describes a function.

Video https://youtu.be/VUTXsPFx-qQ

Evaluating a Function Rule from a Table The input will be the top numbers of the table or the numbers to the left of the table. They are usually the x value. The output will be the bottom numbers of the table or the numbers to the right of the table. They are usually the y value. They will give an equation before or after the table to help fill it in.

Example x 1 2 3 4 5 6 y Do you notice a pattern emerging on the table? If so what is it? The table is going up by 2, so the next numbers will be 12, 14, 16…

Using Function Notation First they will give an equation in notation form. F(x) is a fancy way to say y. The f(5) means that the x at this point of the equation is 5, so we replace the x with 5 Then follow PEMDAS and solve for what f(5) would be.

Let’s Practice Use f(x) = 2x + 3 for the following problems F(-2)