Question

Write the quadratic function in vertex form. y=x^2+4x+7

Answer 1

now, do you know what the vertex form is?

Answer 2

I did at one point in my life. Not so much anymore.

Answer 3

Wait, no. It's y = a(x – h)^2 + k, right?

Answer 4

Yes, that's correct.

Answer 5

y = a(x – h)^2 + k

y = 1(x - h)^2 + k

h and k represent the vertex.

Answer 6

Alright, I basically just need a step-by-step to let me know what I need to do and how to do it so I can figure out the problem.

Answer 7

h is the x-value

k is the y-value

Answer 8

I just graph the equation and get the vertex, it takes to long to do it by hand.

Answer 9

The vertex is -2, 3

Answer 10

So we have:

y = a(x - -2)^2 + 3 which equals: y = a(x + 2)^2 + 3

Answer 11

a = 1

(Hint: It's in the form of ax^2 + bx + c)

Answer 12

So our final answer is:

y = 1(x + 2)^2 + 3

Answer 13

Welcome to Open Study!

You can give medals by clicking 'Best Response'.

Answer 14

Alright! I got it now. I used to be able to do it pretty well but lost my skills a little. Thank you!

Answer 15

Np.