you are correct on the points 1,24 adn 2,45
The first part, I do not understand what you were doing.
y=3x^2 + 12x + 9
you are correct that when x = 0, y = 9 so (0,9) is on it
However I do not know what else you are doing.
I generally complete the square to find the axis of symmetry
3x^2 + 12x + 9 = y
get one by x^2 so divide by 3
x^2 + 4 x + 3 = y/3
subtract 3 from both sides
x^2+4x = y/3 - 9/3 =
add (half of 4)^2 to both sides
x^2 + 4 x + 4 = y/3 -9/3 + 12/3
(x+2)^2 = (1/3)(y+3)
vertex at (-2, -3)
vertical axis of symmetry at x = -2
Well, I'm trying to find two different points by changing the x value since I need to graph these points and then reflect it. I hope this helps you a little.
ok, well reflect it about the line x = -2
and the bottom is at (-2,-3)
Your (1,24) and your (2,45) are fine
first point is the bottom (-2,-3)
next is your (1,24)
the reflection of that about x = -2 is
3 to the left of -2 which is (-5,24)
next do your (2,45)
that is four to the right of the line of symmetry so go four to the left of -2 to -6
this might help:
Answer this Question
ALgebra - JUST A MOM TRYING TO HELP MY CHILD WITH UNDERSTANDING. DON'T KNOW HOW ...
Pre-Cal - I'm trying to put this parabola in standard form which is: (y-k)^2=4p(...
Algebra - how do you solve this quadratic equation? tickets= -0.3x^2+12x+10 ...
algebra II - Solve the quadratic equation 12x^2 + 36a^2= 43ax by factorization ...
algebra - Which of the quadratic functions has the narrowest graph? A. y=1/4x^2 ...
math - i'm having difficulty understanding radicals.. I don't know how to type ...
Algebra 1 - Hello. I am having a bit of trouble understanding the following "...
algebra2 - 1/3 - 5/6 = 1/X SOLVE 1/3 - 5/6 = 1/X Let's remove the denominators ...
Algebra - -0.2x+12x+11 solve by using quadratic equation
Algebra - I don't know how to solve 12x(2)-15x=0 using the quadratic equation ...