Graphs + Coordinates Flashcards
1
Q
discriminant >0
A
2 real roots
2
Q
discriminant =0
A
1 repeated root
3
Q
discriminant <0
A
no real roots
4
Q
discriminant =
A
b^2-4ac
5
Q
quadrants for y=k/x
A
1,3
6
Q
quadrants for y=-k/x
A
2,4
7
Q
quadrants for k/x^2
A
1,2
8
Q
quadrants for y=-k/x^2
A
3,4
9
Q
equation for circle, centre and radius
A
(x-a)^2 + (y-b)^2 = r^2
centre (a,b)
radius r
10
Q
f(x) + a as a vector
A
0
a
11
Q
f(x+a) as a vector
A
-a
0
12
Q
what does af(x) do?
A
stretch height x a
13
Q
what does f(ax) do?
A
stretch width x 1/a
14
Q
-f(x) flips in which axis?
A
x
15
Q
f(-x) flips in which axis?
A
y
