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The values in the table follow a linear pattern or an exponential pattern. Enter the missing y-value in the table and explain your answer?X -2, 0, 2, 4 Y 8, 5, 2 ?

User Kuhu
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1 Answer

23 votes
23 votes

The value of x is -1

Remember that a linear equation is:

y = mx+b

Using the first 3 values

we can get the linear equation


y\text{ = -1.5 x + 5}

Substituting the value x = 4


\begin{gathered} y\text{ = -1.5 (4) + 5} \\ y\text{ = -6+5} \\ y\text{ = -1} \end{gathered}

When we try to fit it in an exponential equation


y=ab^x

We cannot fit an exponential equation with the first 3 sets of x and y values.

User Slapyo
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