The function f is defined by f(x)=(2x^2)-5. What are all possible values of f(x) where -2<x<2?
I don't understand how to do this.
The parabola above is the graph of y= -x^2 + k, where k is a constant.
If AB=10, what is the slope of AP?
A) 2
B) 5/2
C) 5
D) 10
E) 20
a=x^2
b=(x+1)(x-1)
c=(x+1)^2
If x is less than or equal to 0 in the three equations above, what is the ordering of A, B and C
a) A<B<C
b) B<A<C
c) B<C<A
d) C<A<B
e) C<B<A
The diagram includes a parabola with the point (6, 1).
“The figure above shows the graph of the quadratic function f(x)=a(x-4)^2+b, where a and b are constants. Which of the following number lines represents the set of all values that satisfy the inequality f(x)=a(x-4)^2+b <= 1?"
The answer was between 2 and 6 inclusive, but not sure how to get to it? (May 2013 SAT)
Thanks!
Not sure if when i submitted it on the other q and a it went through so posting here incase it didn't.
Here we go, folks—another graphs quiz to entertain/torture you. Good luck! Note: This quiz will be available to everyone until 11/25/14. After that, it will be available only to registered Math Guide Owners. If you own a Math Guide, make sure you forward your receipt or other proof of purchase to mike@pwnthesat.com so that you can...
Note: This quiz will be available to everyone until 10/31/14. After that, it will be available only to registered Math Guide Owners. If you own a Math Guide, make sure you forward your receipt or other proof of purchase to mike@pwnthesat.com so that you can access all the exclusive Math Guide Owners stuff on this...
How’s everyone else doing on this quiz?
You know, It’s funny. When I sit down to write one of these, I usually have a rough sketch in my mind of how the question’s going to go. But half the time, the problem completely evolves into something else by the time I’m done with it. I’m not sure why that is. It could (more…)
It is my hope that, as soon as you’re done figuring this problem out, you’ll be on your way to a wonderful (and professionally arranged and totally safe) fireworks display. What follows is not an SAT question, but if you enjoy math enough to visit my blog regularly and try these challenge questions, my hope (more…)
Leonardo da Vinci totally <3’d parabolas. The parabola is actually a hugely important mathematical concept with tons of forms, properties, and even its own history. It can open up, down, left, right, or any other direction. It can be used to graph the trajectory of my last AT&T cell phone that I threw in a (more…)
The parabola in the figure above has its minimum at x = 2. Which of the following could be an x-intercept of the parabola? (A) 2.5 (B) 3 (C) 3.5 (D) 4 (E) 4.5 Answer and explanation after the jump… The most important thing you can remember about parabolas is this: A PARABOLA IS (more…)