Question

I need help setting up an equation.

Answer 1

Create a quadratic function, f(x), in vertex form. The a should be between 4 and –4, the h will be your birth month, and the k will be your birth day. Write your equation below.

My birth month is October and day is the 2nd.

Answer 2

f(x) might be = a(x + h) - k
f(x) = 2(x + 10) - 2

Answer 3

what he said ^^^^

Answer 4

Okay, so if I want to create a g(x) function that will open in the same direction as f(x) and same vertex but, will be narrower, what would I do?

Answer 5

right increase the value of a to, say 3

Answer 6

Okay, that makes sense! So, if I were to create a h(x) function that opened in the opposite direction and have the same vertex but, be wider than f(x) I would make a=1?

Answer 7

eh guy i'm sorry i messed up
its a quadratic so it should be 2(x + 10)^2 - 2

Answer 8

okay

Answer 9

no to open in the other direction a must be negative

Answer 10

Okay, so I could change it to -2?

Answer 11

right

Answer 12

Okay, thank you for your help :)

Answer 13

yw

Answer 14

So, this would be the standard form of y= 2(x + 10)^2 - 2

y=2x2+40x+198