Math Flashcards
(26 cards)
What is a number?
A number is a mathematical object used to count, measure, and label.
What is a variable?
A variable is a symbol used to represent an unknown value in mathematical expressions and equations.
True or False: Absolute value represents the distance of a number from zero on the number line.
True
What is the absolute value of -5?
5
Fill in the blank: The absolute value of a number ‘x’ is denoted as _____.
|x|
What does the inequality ‘x > 3’ represent?
It represents all numbers greater than 3.
Multiple Choice: Which of the following is an example of an inequality? A) x + 2 = 5 B) x - 3 < 7 C) |x| = 4
B) x - 3 < 7
What is the solution set for the inequality ‘x ≤ 4’?
All numbers less than or equal to 4.
True or False: Variables can only represent positive numbers.
False
What is the absolute value of 0?
0
Fill in the blank: The symbol for ‘less than or equal to’ is _____.
≤
What does the inequality ‘x < -2’ indicate?
It indicates all numbers less than -2.
Multiple Choice: Which inequality represents ‘x is at least 5’? A) x < 5 B) x ≥ 5 C) x ≤ 5
B) x ≥ 5
What is the absolute value of -10?
10
True or False: The equation |x| = 3 has two solutions.
True
What is the solution to the inequality ‘2x + 3 > 7’?
x > 2
Fill in the blank: The symbol for ‘greater than’ is _____.
>
What is the definition of inequalities?
Inequalities are mathematical statements that compare two expressions and show the relationship between them.
Multiple Choice: Which of the following is NOT a type of inequality? A) Strict B) Non-strict C) Absolute
C) Absolute
What is the graph of the inequality ‘x < 1’ on a number line?
An open circle at 1 with a line extending to the left.
True or False: The absolute value function is always non-negative.
True
What does the inequality ‘3x - 5 ≤ 4’ simplify to?
x ≤ 3
Fill in the blank: The solution set of ‘x > 2 and x < 5’ is represented as _____.
(2, 5)
What is the absolute value of a positive number?
The number itself.
