Unit 0 Flashcards
1
Q
Pythagorean Theorem
A
a^2 + b^2 = c^2
2
Q
Midpoint Formula
A
m =( x1+x2/2) , (y1+y2/2)
3
Q
Distance Formula
A
[square root] (x2-x1)^2 + (y2-y1)^2
4
Q
Equation of a Circle
A
(x-h)^2 + (y-k)^2 = r^2
5
Q
Center
A
(h,k)
6
Q
Volume of Cylinder
A
V = (pi)(r^2)h
7
Q
Volume of Cone
A
V = 1/3 (pi)(r^2)h
8
Q
Volume of Sphere
A
V = 4/3(pi)(r^2)
9
Q
Point Slope Form
A
y-y1=m(x-x1) or y=m(x-x1)+y1
10
Q
Horizontal Line
A
A line with no rise; slope is 0
11
Q
Vertical Line
A
A line with no run; slope is undefined
12
Q
Parallel Lines
A
- never intersect
- same slope
- different y-intercepts
13
Q
Perpendicular Lines
A
- cross at a 90 degree angle
- have opposite reciprocal slopes
14
Q
Algebraic Notation
A
5 < x < 20
15
Q
Set Notation
A
{1, 2, 3, 4, 5} or {XER|x > 3}
