Chapter 3 Flashcards
1
Q
Cartesian coordinate system
A
coordinate plane
2
Q
Quadrant 1
A
positive, positive
3
Q
Quadrants are named __________
A
counterclockwise starting from upper right
4
Q
Quadrant 2
A
negative, positive
5
Q
Quadrant 3
A
negative, negative
6
Q
Quadrant 4
A
positive, negative
7
Q
How to calculate distance between two points
A
d = square root of distance of x coordinates ^2 + distance of y coordinates ^2
8
Q
How to find midpoint of two points
A
(x1+x2/2, y1+y2/2)
9
Q
How to find slope of line
A
y2-y1/x2-x1
10
Q
Horizontal lines slope =
A
0
11
Q
vertical lines slope =
A
undefined
12
Q
If two lines are parallel, their slopes are _
A
equal
13
Q
If two lines are perpendicular, their slopes are _
A
negative reciprocals of each other
