9H Dino Day

Front

What is a perfect positive correlation?

Back

A perfect positive correlation is a relationship between two variables where they move in the same direction, represented by a correlation coefficient of 1.

Front

What does a correlation coefficient of -1 indicate?

Back

A correlation coefficient of -1 indicates a perfect negative correlation, meaning that as one variable increases, the other decreases.

Front

What does a correlation coefficient of 0 signify?

Back

A correlation coefficient of 0 signifies no correlation between the two variables, meaning changes in one variable do not affect the other.

Front

What is the meaning of the inequality y ≥ -x - 1?

Back

This inequality represents all points (x, y) that lie on or above the line y = -x - 1.

Front

What does the inequality y < x + 4 represent?

Back

This inequality represents all points (x, y) that lie below the line y = x + 4.

Front

How do you determine if a line is solid or dashed in graphing inequalities?

Back

A solid line is used when the inequality includes 'greater than or equal to' (≥) or 'less than or equal to' (≤). A dashed line is used for 'greater than' (>) or 'less than' (<).

Front

What is the solution set of the system y > 3x and y < -2x + 4?

Back

The solution set includes all points that satisfy both inequalities, which is the area where the two regions overlap.

Front

How do you graph the inequality y ≤ 3x?

Back

To graph y ≤ 3x, draw a solid line for y = 3x and shade below the line.

Front

What does the inequality y ≥ x + 4 indicate about the graph?

Back

It indicates that the graph includes the line y = x + 4 and all points above it.

Front

What is the significance of the slope in the inequality y < -2x + 4?

Back

The slope of -2 indicates that for every unit increase in x, y decreases by 2 units.