Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
kylewendt
Group Title
What is the graph to 2x^2=8? I know this is a standard parabola, but what do you do with the 8?
 5 months ago
 5 months ago
kylewendt Group Title
What is the graph to 2x^2=8? I know this is a standard parabola, but what do you do with the 8?
 5 months ago
 5 months ago

This Question is Closed

dg98 Group TitleBest ResponseYou've already chosen the best response.0
are you sure it's a graph? shouldn't it always be equal to y or f(x)?
 5 months ago

kylewendt Group TitleBest ResponseYou've already chosen the best response.1
Yes, it is a graph. If you need me to, I can copy the exact question (Which isn't much different)
 5 months ago

AccessDenied Group TitleBest ResponseYou've already chosen the best response.1
If we graph y = 2x^2 and y = 8 individually, their intersection is the graph for that equation; That said, 2x^2 is indeed a parabola with a bit of vertical stretch. The 8 is a constant. Consider it as a class of points where the yvalue is 8: (x, 8) We can put any xvalue in and get a point on this line, so the line is just a horizontal line through (0, 8)
 5 months ago

AccessDenied Group TitleBest ResponseYou've already chosen the best response.1
Or alternatively, I think you could bring that 8 over to the left: 2x^2  8 = 0 and draw that graph, which is the same parabola but shifted downwards by 8 units. The intersection at y=0 is the solution set in that case.
 5 months ago

kylewendt Group TitleBest ResponseYou've already chosen the best response.1
So, with 2 solutions, 2 and 2, would this be the graph?
 5 months ago

AccessDenied Group TitleBest ResponseYou've already chosen the best response.1
That parabola seems to be flipped upsidedown, implying it has a negative leading coefficient and positive vertical shift upwards. This parabola given by the equation has to be facing up because its leading term is +2. The whole graph will be shifted down 8 units.
 5 months ago

kylewendt Group TitleBest ResponseYou've already chosen the best response.1
Okay, thank you. I see my problem now!
 5 months ago

AccessDenied Group TitleBest ResponseYou've already chosen the best response.1
Great! I'm glad to help! :)
 5 months ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.