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f(x) = x2. What is g(x)?

Fx X2 What Is Gx class=

Sagot :

Cairdeidn

Answer:

D

g(x) = 2 x²

Step-by-step explanation:

You are given a co-ordinate on g(x): (2,1). Plug this into the equaitons to see which one holds true.

A

g(x)=(0.5x)²?

2=(0.5(1))²?

2=0.25? NO

B

g(x)=(0.25x)²?

2=(0.25(1))²?

2=0.0625? NO

C

g(x)=0.5x²?

2=0.5(1²)?

2=0.5? NO

D

g(x)=2x²?

2=2(1²)?

2=2? YES

This could also be solved intuitively, since from the graph, you can see that the x values for g(x) are twice the x values for f(x), but the mathematical method above works too, and is useful if you find reading and assuming things from graphs difficult.

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