| Formula Name | Formula |
| Slope of a line | Given two points (x1,
y1)
and (x2, y2):
The slope, |
| Distance formula | Given two points (x1,
y1)
and (x2, y2):
The distance between them d, is:
|
| Linear Functions Formulas |
General Form: ax +by + c = 0 Point-Slope Form: (y - y1) = m(x - x1) Slope-Intercept Form: y = mx + b |
| Midpoint of a line segment | Given two points (x1,
y1)
and (x2, y2):
The midpoint is |
| Perpendicular lines | Given the line 
A line perpendicular to l1 is:
|
| Parallel lines | Given the line 
A line parallel to l1 is:
|
| Quadratic formula | The roots of 
When y = 0: |
| Equation of a Circle
|
(a) r2 = x2 + y2
, where
center is (0, 0)
(b) |
where a, b
and c
are constants
, where center is (h, k)