math 2: linear functions Flashcards
1
Q
slope-intercept form:
A
L(x) = mx + b
2
Q
slope formula
A
(y2-y1)/ (x2-x1)
3
Q
general equation of a line (not slope intercept form):
A
Ax + By = C→ y = (-A/B)x + (C/B)
4
Q
slope in the general equation:
A
m = (-A/B)
5
Q
y int in the general equation
A
b= (C/B)
6
Q
if B = 0 and A ≠ 0, general equation is
A
x = C/A (vertical line)
7
Q
parallel lines have
A
equal slopes
8
Q
product of the slopes of perpendicular lines is …, the slopes of perpendicular lines are opposite
A
-1; reciprocals
