Graphing & Slopes Flashcards
1
Q
Vertical lines have a slope of?
A
Undefined
2
Q
Perpendicular lines are always what?
A
Negative reciprocals: if x=1/2, y=-2/1
3
Q
What is the slope formula?
A
Y1-y2/x1-x2 with any two points as x and y
4
Q
What kind of line is the equation set up like: Y=()X+ ?
A
A straight line
5
Q
At the Y-intercept?
A
X=0
6
Q
What is the Y-intercept?
A
The point where the line crosses the Y-axis
7
Q
To find the Y-intercept?
A
plug in 0 for X in an equation like: Y=()X+
8
Q
What is the slope-intercept formula?
A
Y=MX+B
9
Q
What does M stand for in the slope-intercept formula?
A
The slope of the line
10
Q
What does the B stand for in the slope-intercept formula?
A
The point that the line crosses the Y-axis: the Y-intercept
11
Q
Horizontal lines have a slope of?
A
0 zero
12
Q
Horizontal lines have a slope of what?
A
Undefined
