Midterm Study Guide Flashcards
1
Q
Natural/counting numbers
A
All positive integers {1, 2, 3, 4, 5, 6…}
2
Q
Whole numbers
A
Including 0 with all positive integers: {0, 1, 2, 3…}
3
Q
Rational numbers
A
A number expressed as the quotient of two integers (p/q)
4
Q
Irrational numbers
A
Decimals that don’t have a pattern (like pi)
5
Q
Real numbers
A
Rational+irrational numbers (not complex)
6
Q
Percent increase formula
A
Amount of increase/original amount
7
Q
Percent decrease formula
A
Amount of decrease/original amount
8
Q
|ax+b|= k
A
ax+b=k or ax+b=-k
9
Q
“Or”=
A
Union
10
Q
“And”=
A
Intersection
11
Q
|ax+b|>k
A
ax+b>k or ax+b<-k
12
Q
|ax+b|< k
A
-k<ax+b<k
13
Q
Midpoint formula
A
M = ((x1+x2)/2, (y1+y2)/2)
14
Q
Slope formula
A
m=rise/run= (y2-y1)/(x2-x1)
15
Q
Horizontal line equation and slope
A
y=b, m=0
