f(x) = 4(x - 2)2? so f(x) = 8(x - 2)? or is it -2 perhaps?or ^2?
upd: oh, it's a parabola... didn't read far enough X.X... gotcha
http://en.wikipedia.org/wiki/Parabola has all the formulas you need
Use the following quadratic function and the formula for the vertex form for the following questions:
PLEASE HELP ! PLEASE ANSWER IF YOU CAN PLEASE !
f(x) = 4(x - 2)2
a. What is the value of a?
b. Does the parabola open upwards or downwards?
c. What is the value of h?
d. What is the value of k?
e. What is the axis of symmetry?
e. What is the vertex of this function?
f(x) = 4(x - 2)2? so f(x) = 8(x - 2)? or is it -2 perhaps?or ^2?
upd: oh, it's a parabola... didn't read far enough X.X... gotcha
http://en.wikipedia.org/wiki/Parabola has all the formulas you need
read here
Vertex Form Parabola Equation
y = a(x-h)2 + k
in the above equation,
h represents the x-coordinate of the vertex of the parabola
k stands for the y-coordinate of the vertex of the parabola
x represents the x-coordinate of any given point on the parabola
y represents the y-coordinate of any given point on the parabola
a is a numerican constant
a. What is the value of a?
The vertex form is so your a must be 4.
b. Does the parabola open upwards or downwards?
Note that the term is positive that means that the parabola comes from above and then turns upwards again.
c. What is the value of h?
The in your equation
d. What is the value of k?
Your k = 0 (assuming I it means
e. What is the axis of symmetry?
This must be 2 since the symmetry is given by h.
e. What is the vertex of this function?
The vertex you get when you find out the x and y values at the symmetri line. You have symmetri at x = 2
Entering this into your equation gives:
so your y at that point and so the vertex is (2;0)
If you want to write equations etc you have to "wrap math tags" around the math expression. It is the third button from the right on the line where you can write B,I,U.
The languange is called LaTex and you can find alot of pages explaining how to do. At math help forum you can double click on other peoples equations that shows you how they are written.
Hope it helps