Keystone Prep - Cumulative Review

Front

What is the RANGE of a set of numbers?

Back

The RANGE is the difference between the highest and lowest values in a set of numbers.

Front

How do you calculate the RANGE of Lizzy's test scores: 72, 94, 108, 60?

Back

RANGE = Highest score - Lowest score = 108 - 60 = 48.

Front

What is the definition of Slope in mathematics?

Back

Slope is a measure of the steepness of a line, calculated as the rise over run between two points.

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

Find the slope of the line that passes through the points (2, 4) and (6, 12).

Back

Slope = (12 - 4) / (6 - 2) = 8 / 4 = 2.

Front

What is the formula for calculating probability?

Back

Probability = (Number of favorable outcomes) / (Total number of possible outcomes).

Front

If you flip a nickel three times, what is the probability that all flips will land on tails?

Back

Probability = 1/2 * 1/2 * 1/2 = 1/8.

Front

What is the y-intercept in the equation of a line?

Back

The y-intercept is the point where the line crosses the y-axis, represented as (0, b) in the equation y = mx + b.

Front

Identify the slope and y-intercept in the equation: y = -1/3x + 1.

Back

Slope: -1/3, y-intercept: 1.

Front

What does a positive slope indicate about a line?

Back

A positive slope indicates that as x increases, y also increases, showing an upward trend.