holy shit its chp 13 Flashcards
1
Q
Distance formula
A
√(y2 - y1)^2 + (x2 - x1)^2
2
Q
Equation of a circle
A
(x - a)^2 + (y - b)^2 = radius of the circle squared
3
Q
Slope def
A
Vertical change/ horizontal change (Rise/Run)
4
Q
A line with a _________ slope _________ from left to right
A
positive, increase
5
Q
A line with a _________ slope _________ from left to right
A
negative, decreased
6
Q
A line with a _________ slope _________ is
A
zero, horizontal
7
Q
A line with an _________ slope _________ is
A
UND, vertical
8
Q
Parallel lines have the same-
A
-slope
9
Q
Perpendicular lines have __________ and ___________ slopes
A
opposite, reciprocal
(the product of the slopes is -1)
10
Q
Midpoint formula
A
(x1 + x2 / 2 , y1 + y2 / 2)
