Lines Flashcards
1
Q
Find the slope of a line, given two points on it
A
(y2-y1)/(x2-x1)
2
Q
One fact about the slope of the line if the x value is always greater than the y-value
A
slope<1
3
Q
One fact about the slope of the line if the y value is always greater than the x-value
A
slope>1
4
Q
x-int
A
When y=0
5
Q
y-int
A
When x=0
6
Q
Define slope-intercept form
A
y=mx+b, where m is the slope and b is the y-int
7
Q
Find point-slope form given (x1,y1) and m
A
(y-y1)=m(x-x1)
8
Q
Relation between two parallel lines
A
They have the same slope
9
Q
Relation between two perpendicular lines
A
They have slopes that are the (-) reciprocals of each other
