Solve y = x²: Finding Points Where y = 16

Given the function:

y=x2 y=x^2

Is there a point for ? y=16 y=16 ?

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Step-by-step video solution

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00:00 Set up and solve
00:03 Substitute appropriate values according to the given data, and solve for X
00:16 Extract the root
00:20 When extracting a root there are 2 solutions, positive and negative
00:31 And this is the solution to the question

Step-by-step written solution

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1

Understand the problem

Given the function:

y=x2 y=x^2

Is there a point for ? y=16 y=16 ?

2

Step-by-step solution

The problem asks us to find an x x such that in the function y=x2 y = x^2 , the value of y y becomes 16. To do this, we'll substitute y=16 y = 16 into the equation and solve for x x .

1. Start with the equation of the function:

y=x2 y = x^2

2. Substitute y=16 y = 16 into the equation:

16=x2 16 = x^2

3. Solve x2=16 x^2 = 16 for x x :

  • Take the square root of both sides to solve for x x :
  • x=±16 x = \pm \sqrt{16}
  • This gives x=4 x = 4 or x=4 x = -4

4. Identify the points on the function for these values of x x :

  • For x=4 x = 4 , the point is (4,16)(4, 16).
  • For x=4 x = -4 , the point is (4,16)(-4, 16), but this is not provided in the choice list.

Among the given options, the point we find in the choices is:

(4,16) (4, 16)

Therefore, the correct answer is the choice that corresponds with this point:

(4,16) (4,16)

3

Final Answer

(4,16) (4,16)

Practice Quiz

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What is the value of y for the function?

\( y=x^2 \)

of the point \( x=2 \)?

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