Algebra 1 - Unit 7 and 8 Assessment

Front

Describe a correlation with a coefficient of r=-0.89

Back

Strong negative correlation indicates that as one variable increases, the other variable tends to decrease.

Front

What is the formula to calculate the distance between two points (x1, y1) and (x2, y2)?

Back

Distance = √((x2 - x1)² + (y2 - y1)²)

Front

What is the predicted resting heart rate after 6 hours of exercise a week?

Back

55 beats per minute is a reasonable prediction based on exercise data.

Front

How do you find the slope of a line given two points (x1, y1) and (x2, y2)?

Back

Slope (m) = (y2 - y1) / (x2 - x1)

Front

Calculate the distance between the points (-3, -4) and (5, 5).

Back

The distance is 12.

Front

What does a strong positive correlation indicate?

Back

A strong positive correlation means that as one variable increases, the other variable also increases.

Front

What is the value of the slope for the line represented by the equation y = -3/2x + 4?

Back

The slope is -3/2.

Front

If the correlation coefficient is close to 0, what does it indicate about the relationship between two variables?

Back

It indicates a weak or no correlation between the variables.

Front

What is the distance between the points (2, 3) and (2, 7)?

Back

The distance is 4.

Front

What is the significance of a correlation coefficient of r=1?

Back

It indicates a perfect positive correlation.