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Which equation is represented by the graph below ?

Which equation is represented by the graph below ?-example-1
User Xmojmr
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1 Answer

4 votes

Answer:

C) y = ln(x) + 4

Explanation:

The equation can't be A or B, because they are exponential functions, and they can have negative x-values.

It must be one of the two ln functions, because they can't have negative values of x.

To decide between C and D, insert a value of x that makes it easy to calculate the value of y.

Let x = 1.

For Equation C,

y = ln(1) + 4 = 0 + 4 = 4

For Equation D,

y = ln(1) + 5 = 0 + 5 = 5

We draw a vertical line from x = 1 and see where it intersects the graph.

The intersection is at (1, 4), so the correct equation is

y = ln(x) + 4

User Dementrock
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