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A function with an input of 1 has an output of 3. Which of the following could not be the function equation? y = x + 2 y = 3x y = 2x + 1 y = x - 2

A function with an input of 1 has an output of 3. Which of the following could not be the function equation? y = x + 2 y = 3x y = 2x + 1 y = x - 2
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4 votes
A function with an input of 1 has an output of 3. Which of the following could not be the function equation?

y = x + 2
y = 3x
y = 2x + 1
y = x - 2

asked
User Tom Jelen
by
8.4k points

2 Answers

4 votes
Substitute your x and y into the equations x=1 y=3
Y = x - 2
3 = 1 - 2. Is not a true statement and is your answer
answered
User Ktorn
by
8.3k points
2 votes
I think it is y = x - 2 .
answered
User Mootmoot
by
8.1k points
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