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Which relation is a function? {(x,y): |x|+1=5} O {(x,y):5x^2+y=2y-x} O {(x,y):x-2sy} O {(x.y):2x^2-y^2=1} O O o O

Which relation is a function? {(x,y): |x|+1=5} O {(x,y):5x^2+y=2y-x} O {(x,y):x-2sy} O {(x.y):2x^2-y^2=1} O O o O

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter8: Linear Functions
Section8.2: Linear Equations In Two Variables
Problem 2E
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Which relation is a function? O {(x,y): [x|+1=5} O {(x,y):5x^2+y=2y-x} O {(x,y):x-2sy} O {(x.y):2x^2-y^2=1}
Transcribed Image Text:Which relation is a function? O {(x,y): [x|+1=5} O {(x,y):5x^2+y=2y-x} O {(x,y):x-2sy} O {(x.y):2x^2-y^2=1}
(x² – 1 if x > 1 f(x) = {2 if x = 1 (2x + 3 if x <1 What is f(-1)? * O 2 O 2 1
Transcribed Image Text:(x² – 1 if x > 1 f(x) = {2 if x = 1 (2x + 3 if x <1 What is f(-1)? * O 2 O 2 1
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