The following values represent exponential function ƒ(x) and linear function g(x). ƒ(1) = 2 g(1) = 2.5
ƒ(2) = 6 g(2) = 4
A. Determine whether or not there is a solution to the equation In 2-3 sentences describe whether there is a solution to the equation ƒ(x)=g(x) between x=1 and x=2. B. Use complete sentences to justify your claim

Respuesta :

The function f(x) does not have a value of x that satisfies the given solutions, while the function g(x)=1.5+1. 

Answer:

There does not exist any solution of [tex]f(x)=g(x)[/tex] as thir graphs do not intersect.

Step-by-step explanation:

We are given that,

The values of the exponential function f(x) are f(1)= 2 and f(2)= 6.

That is, we get,

[tex]f(1)=2=2\times 3^0[/tex]

[tex]f(2)=2=2\times 3^1[/tex]

So, the function f(x) is [tex]f(x)=2(3)^x[/tex].

Moreover, the values of the linear function g(x) are g(1) = 2.5  and g(2) = 4.

That is, the slope = [tex]\frac{4-2.5}{2-1}[/tex] = 1.5

Substituting the slope and point (1,2.5) in the linear equation [tex]y=mx+b[/tex], where m is the slope, we get,

[tex]2.5=1.5\times 1+b[/tex]

i.e. b= 1

Thus, the function g(x) is [tex]g(x)=2.5x+1[/tex].

Consider, [tex]f(x)=g(x)[/tex]

i.e. [tex]2(3)^x=2.5x+1[/tex]

Now, the function f(x) is exponentially increasing and the linear function g(x) is increasing between x= 1 and x= 2, but there is no point where the graphs of the functions are intersecting.

Thus, there is no solution of the equation [tex]f(x)=g(x)[/tex].

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