Properties of Equality
If 5y = 25, the property of equality was used to write. 5y - 3 =25 - 3
Subtraction Property of Equality
What is n, if n + 25 = 30
n = 5
3n = 18, n = ?
n = 6
14 is less than r
14 < r
The number of peaches, p, a farmer harvest in b, bushels - which is dependent
number of peaches (depends on how many bushels are harvested)
If x + 1 = 7, the property of equality says this
4(x + 1) = 4(7)
Multiplication Property of Equality
y - 19 = 34, y = ?
y = 53
x/10 = 5, x = ?
x = 50
r is greater than -5
r > -5
the amount of flour you buy, and the number of loaves of bread you need to make - dependent variable
flour depends on the need
y - 12 + 30, the property that says
y - 12 + 12 = 30 + 12
Addition Property of Equality
n + 12 = 48, n = ?
n = 36
4n = 100, n =?
n = 25
A bill less than $42
b < $42
Which is which;
the distance traveled, d, and the speed, s
d - dependent
s - independent
5m + 4 = 19
5m + 4 - 4 = 19 - 4
Subtraction Property of Equality
n - 20 = 100
n = 120
x/2 = 12, x = ?
x = 24
the speed limit cannot exceed 80
s < or equal to 80
the calories, c, in a snack, and the amount of the snack, s
c - dependent
s - independent
3t = 27
3t/3 = 27/3
Division Property of Equality
321 + n = 45
n = -276
55m = 605, m = ?
m = 11
a race is farther than 10 miles
r > 10
Which is which,
the amount of money you spent, s, and the amount of money you have left, m
m - dependent
s - independent