# Algebra 1 Module 2 DBA Notes.docx - Representations of...

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Representations of Relations (Lesson 2.01 p. 2)A relationdescribes a relationship and pairs input valueswith output values. It can represent a relation in severalways.In a Graph:To graph an ordered pair, start at the origin (0,0). The first value (x) tells how many spaces to go right ifpositive and left if negative. The second value (y) tells howmany spaces to go up if positive and down if negative.In a Table:To write a table of values, list the x-values in onecolumn and the y-values in the second column.In a Mapping:In a mapping, the x-values are connected tothe corresponding y-values using arrows.Representations of Relations (Lesson 2.01 p. 3)Focus QuestionHow do you determine if a relation is a function?When this happens, the relation is called afunction(A
mathematical relationship in which each input value is pairedwith exactly one output value).To determine whether a relation is a function you look at theinput, or x, values only.
Domain & Range (Lesson 2.01 p. 6)Focus QuestionHow do you determine domain and range?--
Function Notation and Evaluating - (Lesson 2.02 p. 2-3AND Lesson 2.04 p. 3)Focus QuestionHow do you evaluate functions using function notation?
Function Formc = 120 + 5xf(x)= 120 + 5xWriting in function notation means I am describing therelationship between x, the input, and f(x), the output. Theoutput, f(x), is dependent on the value of x, and that is whyit is called a function of x.ImportantInput values aren't always represented using the variable x.Any letter may be used. For example, if the variable t is used

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Term
Fall
Professor
Vicens Ramos
Tags
Test, Transformations of Linear Functions
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