Unit 3 Functions.

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Presentation transcript:

Unit 3 Functions

4.2 Graphs of Functions

Essential Question: How can I “see” a function?

How do we determine if it’s a function? Vertical Line test Repetition of x-values Function in f(x) form

Is it a function? x2 + y = 1 -x + y2 = 1 x3 + y = 1 -x + y3 = 1

Evaluate the following: When is the graph below the x-axis? Does the graph represent a function? What is the domain of the function? What is the range of the function?

Sketch the following: y = 7 f(x) = -2x + 5 y = (x – 5)2 y = 2|x| - 3

Revisiting the Essential Question: How can I “see” a function?

Homework 4.2 Pg 228 – 230: 1, 6 – 12 even, 20 – 23, 26, 34, 42 – 52 even, 60, 64