Vocabulary
The number that is multiplied by a variable in an algebraic expression.
(the "3" in 3m)
What is a coefficient?
This expression represents "ten less than 3 times a number"
What is 3n-10 ?
This is the number line representation of the inequality c > 125.
What is an open circle above 125, with an arrow pointing to the right
This property states that any number multiplied by 1, or added to 0, will not change the value of that number.
What is the Identity Property?
This is the first step in solving for the value of m in:
3m = 42
What is dividing both sides by 3 ?
A number in an expression that has a fixed value and does not change.
What is a constant?
This equation represents the total cost of going skating, if skates must be rented for $3.50. In addition, it costs $2.25 per hour to skate.
Use C to represent the total cost, and H to represent the number of hours
What is
C = 2.25H+3.50
Allie went to the fair and discovered she must be at least 60 inches to ride the fun rides. This inequality represents that situation.
What is h >= 60 ?
This property states that:
a + b + c = c + a + b
What is the Commutative Property?
This is the first step in solving for x in:
x - 12 = 37
What is adding 12 to both sides?
A symbol, usually a letter, that represents an unknown number or a value from a specified set.
What is a variable?
This expression is equivalent to:
m*m + 32 + n
What is
m2 + n + 9 ?
This is the inequality AND graph (number line) represented by the situation:
"Students can only miss 3 or fewer days to meet the attendance incentive."
What is:
days <= 3
closed circle above 3, pointing to the left ?
This property states that:
a x (b x c) = (a x b) x c
What is the associative property?
This expression is equivalent to
2(2a2 - 4a + 3) + 3a2 - 4a + 7
What is 7a2 - 12a + 13 ?
A mathematical sentence that shows two expressions are equal, containing an equals sign.
What is an equation?
After combining like terms, this expression is equivalent to:
3a + 15 - 2a2 + 5a2 - 7 + 5a
What is
3a2 + 8a + 8 ?
This is the inequality represented by the graph:
- open circle above 4.5
- arrow pointing to the left
What is x < 4.5 ?
This property states that:
a(b + c) = (a x b) + (a x c)
What is the Distributive Property?
This is the value for x, if:
(3/4)x = 12
What is x = 16?
Two or more expressions that have the same value, regardless of the value of the variable.
What are equivalent expressions?
The formula for the perimeter of a rectangle is P = 2l +2w, where l is the length and w is the width. If a rectangle has a length of 8 inches and a width of 5 inches, this is its perimeter.
What is 26 inches?
An inequality is a ____ between two quantities. Inequalities have ____ solutions.
(must get both!)
What is comparison; infinite.
This is an equivalent expression for:
3(3m - 4)
What is 9m - 12 ?
This is the value for x, if:
20 + 4x = 50
What is x = 7.5 ?