Algebra Equations Flashcards
1
Q
In y = mx + b, what is b?
A
The y-intercept
2
Q
What is the equation for the slope of a line?
A
y2 - y1
_______
x2 - x1
3
Q
Rise
A
The change in y when moving from point A to point B (y2 - y1 in the slope equation)
4
Q
Run
A
The change in x when moving from point A to point B (x2 - x1 in the slope equation)
5
Q
Slope of a horizontal line
A
0
6
Q
Slope of a vertical line
A
Undefined (since the run is 0)
7
Q
Equation of a horizontal line
A
y = b
8
Q
Equation of a vertical line
A
y = a
Where a is the x-intercept
9
Q
Two lines are parallel if
A
Their slopes are equal
10
Q
Two lines are perpendicular if
A
Their slopes are negative reciprocals of each other
11
Q
Reciprocal
A
(Of x):
1
____
X
