Use the graph that shows the solution to f(x)=g(x) . f(x)=−3/4x2+3x+1 g(x)=2x What is the solution to f(x)=g(x) ?
Select each correct answer.




x = 0

x = 1

x = 2

x = 4

Respuesta :

Option C: [tex]x=2[/tex] is the solution of the graph.

Explanation:

The function is [tex]f(x)=-\frac{3}{4}x^{2} +3x+1[/tex] and [tex]g(x)=2x[/tex]

We need to determine the solution of the function.

The solution can be determined by equating [tex]f(x)=g(x)[/tex]

Thus, we have,

[tex]-\frac{3}{4}x^{2} +3x+1=2x[/tex]

Subtracting both sides by 2x, we have,

[tex]-\frac{3}{4}x^{2} +x+1=0[/tex]

Multiplying both sides by 4, we have,

[tex]-3x^{2} +4x+4=0[/tex]

Factoring, we get,

[tex]-3x^{2} +6x-2x+4=0[/tex]

Factoring out the common terms, we have,

[tex](-3x^{2} +6x)+(-2x+4)=0[/tex]

Simplifying, we get,

[tex]-3x(x-2)-2(x-2)=0[/tex]

       [tex](-3x-2)(x-2)=0[/tex]

Thus, we have,

[tex]-3x-2=0[/tex]  or [tex]x-2=0[/tex]

Simplifying, we get,

[tex]x=-\frac{2}{3}[/tex]  or  [tex]x=2[/tex]

Thus, the solution of the graph is [tex]x=2[/tex]

Therefore, Option C is the correct answer.

Answer:

k12

3.03: Intersections of Graphs quiz

The answer is x=0 and x=2

Step-by-step explanation:

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