The graph of which function has an axis of symmetry at x = 3? f(x) = x2 + 3x + 1 f(x) = x2 – 3x – 3 f(x) = x2 + 6x + 3 f(x) = x2 – 6x – 1

The graph that has an axis of symmetry at x = 3 is f(x) = x2 – 6x – 1.

You can find the axis of symmetry by using the equation to find the x value of the vertex. The x value of the vertex is always the axis of symmetry in a quadratic graph. The equation is below.

x = -b/2a

In this equation, a is the coefficient of x^2 and b is the coefficient of x. If we use the numbers from the last equation in your list, a = 1, b = -6.

x = -b/2a

x = -(-6)/2(1)

x = 6/2

x = 3

c. prove the lengths are the same.

step-by-step explanation:

you need to prove the segments are congruent. congruent segments have the same length. find the lengths of the segments using the distance formula, and compare them.

answer: c. prove the lengths are the same.

2(2x + 3) = -4 + 2(2x + 5)

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 6

4x - 6 + 6 = 4x - 6 + 6

4x = 4x

x = x

unlimited solutions.