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
[tex]y\text{ = -1.5 x + 5}[/tex]
Substituting the value x = 4
[tex]\begin{gathered} y\text{ = -1.5 (4) + 5} \\ y\text{ = -6+5} \\ y\text{ = -1} \end{gathered}[/tex]
When we try to fit it in an exponential equation
[tex]y=ab^x[/tex]We cannot fit an exponential equation with the first 3 sets of x and y values.
