Substitution
Evaluate x = 2 in the equation, what is the value for y?
x + 6 = y
y = 8
4a + b - 2a
2a + b
A mathematical statement that includes addition, subtraction, multiplication or division.
expression or equation
what are the like terms below?
a, z, b, m, 2a, 4m, 3a
a, 2a, 3a & m, 4m
3x = 27
x = 9
Evaluate x = 5 in the equation, what is the value for y?
2x + 3 = y
y = 13
4b + 2a + a + 2b - b
3a + 5b
A letter or symbol used to represent an unknown number.
variable
what variable are unlike?
x, y, z, 6x, 3z, 9y
x, y, z
2x + 4 = 36
x = 16
Evaluate y = 3 in the expression, what is the value for the expression?
6y + 7 + y - 2y
= 22
A city bus can hold 16 passengers. At the first stop, 7 people get off. At the next stop, 6 more people get on. Write an expression to solve the problem.
16p - 7p - 6p
= 3p
a mathematical statement that must have two or more terms.
expression
what are the like terms below?
x, 9m, 3u, 4x, 15u, 7 , 2m, 5x
x, 4x, 5x & 9m, 2m & 3u, 15u
2 + 6y = 50
y = 8
Evaluate y = 2 in the expression, what is the value for the expression?
6y(2) + y + 14
= 40
Tomothy has 8 toys and sold 3 of his toys to buy 2 books and 3 pencils for school. He then sold 2 more of his toys and bought a ruler. Write an expression in its simplest form for the scenario above.
3t + 2b + 3p + r
a fixed value that does not change
constant
What are unlike terms?
Give an example
terms that DO NOT LOOK the same.
x & y
3x - 5 = 29 + 2
x = 12
Evaluate y = 3 in the equation, what is the value for x?
8y - 2y = 3x - 9
x = 9
Simplify the expression formed from the scenario below.
Billy has 12 pencils he have Tom 2, Lena 3 and Adam 4 of his pencils and the bought double his original price.
27p
a constant value that is multiplied with a variable of a single number.
coefficient
what are like terms?
Give and example.
Terms that are exactly the SAME.
b & b
4x/2 - 2 = 40
x = 21