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Variable
Constant
Equation
Expression
100
How many variables are in this expression? 3x-4z
2: the x and the z are both variables because they don't have a specific amounts (they can vary)
100
How many constants are in this expression? 7(3+t)-6
3: 7, 3 and 6 are all constants.
100
What is x? 6x=18
x=3 because... you have to isolate the variable, divide each part of the equation by 6. 6x÷6=x 18÷6=3 so..... x = 3
100
What is the definition of an expression?
A mathematical phrase made up of variables connected by operations.
200
What is the Definition of variable?
A letter or symbol representing a quantity that can vary.
200
What is the definition of a constant?
A quantity having a fixed volume that doesn't change.
200
Choose the example of an equation a) X b) Taylor’s elbow c) n÷4+6 d) Hilary’s earlobe e) 8+3n=23 f) People g) A variable h) Goat on a boat
e) 8+3n=23 An equal sign means it’s an equation. ps. if you chose b), c) or h) I think you need to work on your algebra
200
Say this expression in words: 4n+7
Seven more than a number times/multiplied by 4.
300
True or False? The letter O is the most commonly used variable
False: O can not be used as a variable because it can be mistaken as a zero.
300
In this question what is the constant telling you to do? 3x
Multiply the variable (x) by 3.
300
Explain the difference between an expression and an equation
Expressions. don’t have equal signs Expression: 3w+4 Equations do. Equation: 3w+4=13
300
Explain why we isolate the variable and show an example.
To find out what the variable’s value is.
400
Choose the answer that is an example of a variable..... a) death b) a number c) time d) days of the week
c) time: time is always changing where as the rest of the choices all stay the same therefore they are constants.
400
What is more important, the constant or the variable.
They are both equally important because without one or the other we couldn't make an algebraic expression or equation.