Review for unit 2 Test

Front

What does the inequality x < 3 represent on a number line?

Back

It represents all numbers to the left of 3, not including 3 itself.

Front

How do you solve the inequality -5y - 3 > 12?

Back

Add 3 to both sides: -5y > 15. Then divide by -5 (remember to flip the inequality): y < -3.

Front

If Mrs. Green has $90 to spend on parking ($5) and entry tickets ($17 each), how do you set up the inequality to find the number of people she can take?

Back

Let x be the number of people. The inequality is: 5 + 17x ≤ 90.

Front

What is the minimum number of sales Sarah needs to make to earn at least $100 if she earns $40 a day plus $10 per sale?

Back

Set up the inequality: 40 + 10s ≥ 100. Solve for s: s ≥ 6.

Front

What is the simplified form of -3(y - 7)?

Back

The simplified form is -3y + 21.

Front

What is an inequality?

Back

An inequality is a mathematical statement that compares two expressions using symbols like <, >, ≤, or ≥.

Front

What does the symbol '>' mean in an inequality?

Back

It means 'greater than'.

Front

What is the solution set of the inequality x > 3?

Back

The solution set includes all numbers greater than 3.

Front

How do you graph the inequality y < 2 on a coordinate plane?

Back

Draw a horizontal line at y = 2 (dashed line) and shade below the line.

Front

What is the difference between '≤' and '<'?

Back

'≤' means 'less than or equal to', while '<' means 'less than' only.