Properties
- 100
If a>b, what sign does the difference a−b have?
- 200
If a<b, what sign does the expression (a+7)−(b+7) have?
- 300
If a<b and both…
In the game - 400
If 2<a<5, between what…
In the game - 500
If 0<a<b, compare the…
In the game
Grade 9 · Algebra
Algebra quiz for grade 9: Inequalities
This quiz helps revise “Inequalities” in Algebra for grade 9. It has 25 questions in five categories: Properties, Solve It, Intervals, Systems, Real-Life Limits. Questions get harder as the points go up, from 100 to 500.
A peek at the questions
The 100- and 200-point questions are open here. The rest show only their first words, and there are no answers: all of that is in the game itself.
Solve It
- 100
Solve the inequality x+4>9.
- 200
Solve the inequality 3x−2≤10.
- 300
Solve the…
In the game - 400
Solve the…
In the game - 500
Solve the…
In the game
Intervals
- 100
Write the solution set x≤3 in interval notation.
- 200
Write the solution set −2<x<5 in interval notation.
- 300
What is the intersection…
In the game - 400
What is the union…
In the game - 500
Find the intersection of…
In the game
Systems
- 100
Solve the system: x>1 and x<4.
- 200
Solve the system: x≥−2 and x≤3.
- 300
Solve the system…
In the game - 400
Solve the system…
In the game - 500
Solve the system…
In the game
Real-Life Limits
- 100
An elevator holds at most 600 kg. It already carries 470 kg. How many more kilograms can be added at most?
- 200
A ticket costs 80 UAH and you have 450 UAH. What is the greatest number of tickets you can buy?
- 300
A temperature must stay…
In the game - 400
Delivery costs 50 UAH…
In the game - 500
You need at least…
In the game
Play this quiz
All 25 questions and the answers are in the game. Invite your class or friends with a link — guests need no account.
How it works
- Pick a quiz and press “Play”.
- Send students or friends the link — they join from a phone or a computer.
- Choose questions on the board, buzz in first and collect points.