If (-1, y) lies on the graph of y = 3^x+1, then what is y?

1 Answer
Dec 9, 2015

it depend on what the original question is
if y= 3^x + 1 , then solution is (-1, 4/3)

If y= 3^(x+1) , then solution is (-1, 1)

Explanation:

Assuming your question:
If the point (-1, y) lies on the graph y= 3^x + 1 then what is y

We are given x= -1 , and the y= 3^x +1 ; let substitute -1 for x into the equation

y= 3^(-1) + 1
y = 1/3 + 1
y= 1/3 + 3/3
y= 4/3

The point is (-1, 4/3)

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Assuming your question is this
If the point (-1, y) lies on the graph of y= 3^(x+1), then what is y?

Substitute -1 for x into the given equation

y = 3^(-1+1)
y= 3^0
y= 1

The point is (-1, 1)