8th Math Final Exam

Front

What is the definition of slope in mathematics?

Back

Slope is the measure of the steepness of a line, calculated as the ratio of the vertical change (rise) to the horizontal change (run).

Front

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

Back

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

Front

What does a positive slope indicate about a line?

Back

A positive slope indicates that as the x-value increases, the y-value also increases, meaning the line rises from left to right.

Front

What does a negative slope indicate about a line?

Back

A negative slope indicates that as the x-value increases, the y-value decreases, meaning the line falls from left to right.

Front

What is the slope of the line represented by the equation y = mx + b?

Back

The slope is represented by 'm' in the equation.

Front

Convert 0.0000713 to scientific notation.

Back

7.13 x 10^-5.

Front

What is the Mean Absolute Deviation (MAD)?

Back

MAD is the average of the absolute differences between each data point and the mean of the data set.

Front

How do you find the mean of a set of numbers?

Back

Add all the numbers together and divide by the total count of numbers.

Front

What is the formula for calculating the Mean Absolute Deviation?

Back

MAD = (Σ|xi - mean|) / n, where xi is each data point, mean is the average, and n is the number of data points.

Front

What is the slope of the line represented by the equation y = 2x + 3?

Back

The slope is 2.