Asked by Anonymous

What is the rule for the function shown in the table?
x: -1 | 0 | 1 | 2
y: -2 | 1 | 4 | 7

A. y= 1/3x + 1
B. y=3x + 1
C. y= 1/3x
D. y= 1/3x + 1

Will someone please help and explain how I can work this out. I have trouble with these.

Answers

Answered by Steve
note that y grows by 3 when x grows by 1. That means you can start with

y = 3x

But since y(0)=1 instead of 3*0=0,

y = 3x+1
Answered by bat
you better be right
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