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.

2.Using complete sentences, explain how to convert your birthday function into standard form.

3.Graph your function. Include your graph below.

4.Using complete sentences, explain how to find the average rate of change for f(x) from x = 4 to x = 7.

Question

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.

2.Using complete sentences, explain how to convert your birthday function into standard form.

3.Graph your function. Include your graph below.

4.Using complete sentences, explain how to find the average rate of change for f(x) from x = 4 to x = 7.

anonymous · Answer

my birthday is July twenty-ith (07/20)

anonymous · Answer

cool

anonymous · Answer

so................. do u still need help

anonymous · Answer

yes please

campbell_st · Answer

the vertex form is 

$$y = a(x - h)^2 + k$$

you have k = 20 and h = 7

substitute them

lastly choose a value for a remember its between -4 and 4

an easy choice is a = 1

a really each choice is a = 0... but your teacher probably won't like it.

campbell_st · Answer

then to get it to standard form... just distribute and get it into the form 

$$y = ax^2 + bx + c$$

to graph it, use a table of values... 

given the vertex is at (7, 20) pick values either side

so 

x :  3     4     5    6    7    8   9  10

substitute them to find y. 

then plot the points to get the parabola.