× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
g
3
3
2
J
2
p
2
m
2
h
2
s
2
r
2
d
2
l
2
a
2
Home Q & A Board Science-Related Homework Help Mathematics
New Topic  
Hurley Hurley
wrote...
Posts: 10
Rep: 0 0
11 years ago
i have a question where the parabola's in the positive x and y quadrant and its facing down.  is there an equation for something  like this?
thanks in advance
Read 293 times
3 Replies

Related Topics

Replies
wrote...
#1
11 years ago
Sure!  y=-(x-20)^2+20 will do it.  The - on the x^2 makes it flip upside down.  The -20 in the parenthesis makes it move 20 to the right.  The +20 outside the parenthesis makes it move 20 up.
jr
wrote...
#2
11 years ago
Try -(x-5)^2+16
The (x-5) moves it to the right on the x axis.
The +16 moves it up 16 units on the y axis.
wrote...
#3
11 years ago
The parabola opens downward, so 'a' will be negative.

The vertex is in QI, so h and k will both be positive.

Equation:

y = a(x - h)² + k, where a < 0, h and k > 0
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
   
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1077 People Browsing
 131 Signed Up Today
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 1957
  
 173
  
 334
Your Opinion
What's your favorite math subject?
Votes: 293
Previous poll results: What's your favorite coffee beverage?