x −x^2+5x

0 0
1 4
2 6
3 6
4 4
5 0
x −x+5
−1
6
k 4
3 2
5 0
7 −2
What value of k in the table will be a solution to the equation −x^2+5x=−x+5
?(1 point)
Responses

−6
negative 6

0
0

4
4

1

1 answer

To find the value of \( k \) that satisfies the equation \(-x^2 + 5x = -x + 5\), we can rearrange the equation to find \( x \) values that meet the criteria.

First, let’s bring everything to one side of the equation:

\[ -x^2 + 5x + x - 5 = 0 \]

This simplifies to:

\[ -x^2 + 6x - 5 = 0 \]

Multiplying the whole equation by -1 to make it easier to solve, we get:

\[ x^2 - 6x + 5 = 0 \]

Next, we can factor this quadratic equation:

\[ (x - 1)(x - 5) = 0 \]

Setting each factor equal to zero gives us the solutions:

\[ x - 1 = 0 \quad \Rightarrow \quad x = 1 \] \[ x - 5 = 0 \quad \Rightarrow \quad x = 5 \]

So the solutions to the equation are \( x = 1 \) and \( x = 5 \).

Now, we check the provided values of \( k \) in the table, which includes 4. The responses will need to match \( k \):

  • For \( k = 4 \):
  • The value \( k = 4 \) is not a solution to our equation, as the solutions derived are \( x = 1 \) and \( x = 5 \).
  • The values of \( x \) in the provided table show that at \( x = 1 \) or \( x = 5 \) match the solutions we found.

Thus, the only potential value in the provided responses that satisfies the equation \(-x^2 + 5x = -x + 5\) is \(4\), because it's the only valid response, alongside the actual values.

In conclusion, the correct value of \( k \) is \( \boxed{4} \).