7th PBA Test #4 Review

Front

What is the mean of the following numbers: 9, 8, 12, 6, 10?

Back

Mean = (9 + 8 + 12 + 6 + 10) / 5 = 9

Front

Solve for x: -2(x + 2) < 14

Back

x > -9

Front

Solve for x: -2x + 2 > 3x - 8

Back

x < 2

Front

What is the slope of the line represented by the equation y = -x + 1?

Back

Slope = -1

Front

Evaluate the expression: 2(-10) + 1

Back

-19

Front

What is the definition of mean in statistics?

Back

Mean is the average of a set of numbers, calculated by dividing the sum of the numbers by the count of numbers.

Front

What does it mean for an inequality to be 'undefined'?

Back

An inequality is undefined when it does not have a solution or when it cannot be determined.

Front

What is the formula for calculating the slope of a line?

Back

Slope (m) = (y2 - y1) / (x2 - x1) where (x1, y1) and (x2, y2) are two points on the line.

Front

What is the difference between an equation and an inequality?

Back

An equation states that two expressions are equal, while an inequality shows that one expression is greater than or less than another.

Front

What is the process to find the mean of a data set?

Back

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