Question

HOW DO I DO A PARABOLA? for dummies

Answer 1

Example problem?

Answer 2

Or do you need an explanation?

Answer 3

I don't know how to do them either. But I can draw them, or solve problems involving them:)

Answer 4

lol

Answer 5

can you give an example of a parabola problem that we may work on?

Answer 6

my issue is, i have a grade 10 math final, but i was ill when we learnt them now i do understand a bit of it? but id like to know how to find (h,k) vertex, zeros, etc? i may be missing smtg? is there is something you can help to guide me that would be amazing!

Answer 7

ALgebra II?

Answer 8

its called Scientific math?? grade 10 i mean we do learn algebra and stuff but yah anyways

Answer 9

Have yo ulearned complete the square?

Answer 10

sounds really familiar, i have not been doing great in math lately :( ive been discouraged so i tend not to pay attention :/

Answer 11

http://www.purplemath.com/modules/sqrvertx.htm

Answer 12

is that all i need to knwo for parabolas?????????

Answer 13

That's for complete the square. If you can do this, you can get it into the form
y = a(x - h)^2 + k and
x = a(y - k)^2 + h

Answer 14

see i dont get what the point or use of "completing the square" is
also, i dont know how to find any of the important things to fill in the equations, unless on that site from previous. i honestly have it all jumbled in my head. :/

Answer 15

If you have it in the form y = ax^2 + bx + c, the vertex for the x-value is -b/2a. Then just plug it back in to get the y.
Also, for how to find zeroes. Look up:
Factoring
Factoring by Grouping
Quadratic Formula
Completing the square
Discriminant
and also put in finding the solutions/zeros.

Answer 16

(h, k) is the vertex. See how it's given to you in that form above? Reverse the sign of h when you get that, and k is just there for you. Also, if a is positive, it opens upward, negative and it goes downward. If a is bigger than 1, it's narrower. If it's less than 1 and greater than 0, then it's wider. Do you need to know how to find the focus?

Answer 17

nop no focus. OKAY thankyou! i will try to figure out all ur information in the morning!! thanks for all the help

Answer 18

You may need to find out how to get roots of a quadratic equation, since you mentioned something about zeros in your first comment

Answer 19

roots of polynomials I mean

Answer 20

Make sure to look up the stuff I mentioned because it can really help.

Answer 21

anyways...

Answer 22

GTFO B.