Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

#1 2018-03-09 23:39:53

Monox D. I-Fly
Member
From: Indonesia
Registered: 2015-12-02
Posts: 1,296

[ASK] Reflected Parabola

Determine the reflection of a parabola

by the line y = -x.

I know how to do it graphically, but please tell me how to do it algebraically.


Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away. May his adventurous soul rest in peace at heaven.

Offline

#2 2018-03-10 00:01:30

bob bundy
Administrator
Registered: 2010-06-20
Posts: 8,417

Re: [ASK] Reflected Parabola

hi Monox D. I-Fly

Try this:

Replace every x with y, and every y with x.  Then change all the signs on both x and y.

That gives:

Hope that helps,

Bob


Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

Offline

#3 2018-03-10 01:00:48

Monox D. I-Fly
Member
From: Indonesia
Registered: 2015-12-02
Posts: 1,296

Re: [ASK] Reflected Parabola

Ah, okay. That helps. Thanks.


Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away. May his adventurous soul rest in peace at heaven.

Offline

Board footer

Powered by FluxBB