Math 7 EXT Weekly Flashcardizz #21 2024-25

Front

What is an inequality?

Back

An inequality is a mathematical statement that compares two expressions and shows that one is greater than, less than, or not equal to the other.

Front

How do you graph an inequality on a number line?

Back

To graph an inequality, use an open circle for < or > and a closed circle for ≤ or ≥. Shade the region that represents the solution set.

Front

What does the term 'solution set' mean in the context of inequalities?

Back

The solution set is the set of all values that satisfy the inequality.

Front

What is the difference between positive and negative association in graphs?

Back

Positive association means that as one variable increases, the other also increases. Negative association means that as one variable increases, the other decreases.

Front

What is a quartile in statistics?

Back

A quartile is a type of quantile that divides a data set into four equal parts.

Front

What is the upper quartile?

Back

The upper quartile (Q3) is the median of the upper half of a data set, representing the 75th percentile.

Front

How do you solve the inequality 6(n + 2) < -72?

Back

First, distribute: 6n + 12 < -72. Then, subtract 12: 6n < -84. Finally, divide by 6: n < -14.

Front

What does it mean if a graph has no association?

Back

No association means there is no discernible relationship between the two variables represented in the graph.

Front

What is the significance of the slope in a linear graph?

Back

The slope indicates the rate of change between the two variables; a positive slope means an increase, while a negative slope means a decrease.

Front

What is a linear inequality?

Back

A linear inequality is an inequality that involves a linear function, typically expressed in the form ax + b < c or ax + b > c.