8th Grade Math Vocabulary

What is Bivariate Data?

• A set of data that shows a relationship between two variables.

• A collection of data points that are unrelated.

• Data that involves three or more variables.

• A type of data that is only qualitative.

What is a Variable in mathematics?

• A fixed number that does not change.

• An unknown value, usually represented by a letter.

• A type of equation that has no solution.

• A constant value used in calculations.

In simple and compound interest, what does 'p' represent?

• Principal, Starting Amount.

• Percentage Rate

• Payment Amount

• Profit Margin

What is the slope of a line?

• The ratio of the rise (change in y) to the run (change in x).

• The angle formed by the line with the x-axis.

• The distance between two points on the line.

• The vertical distance divided by the horizontal distance.

What is the Pythagorean theorem?

• In a right triangle, a² + b² = c², where c is the hypotenuse.

• In any triangle, the sum of the angles equals 180 degrees.

• The area of a circle is πr², where r is the radius.

• The relationship between the sides of a triangle is given by a² + b² = c, where c is the longest side.

What is the difference between mean, median, and mode?

• Mean is the middle value, median is the average, and mode is the most frequent value.

• Mean is the average, median is the middle value, and mode is the most frequent value.

• Mean is the most frequent value, median is the average, and mode is the middle value.

• Mean is the sum of values, median is the highest value, and mode is the lowest value.

What are complementary angles?

• Two angles that add up to 90 degrees.

• Two angles that add up to 180 degrees.

• Two angles that are equal in measure.

• Two angles that are adjacent to each other.

What is a ratio?

• A comparison of two quantities by division.

• A method of calculating percentages.

• A way to measure distance between two points.

• A technique for sorting data in ascending order.

What are alternate exterior angles?

• A pair of angles on the same side of the transversal, inside the parallel lines.

• A pair of angles on opposite sides, on the outside of the parallel lines.

• A pair of angles that are equal in measure and adjacent to each other.

• A pair of angles that are supplementary and on the same side of the transversal.

What is the formula for calculating compound interest?

• Compound Interest = Principal x (1 + Rate)^Time - Principal.

• Compound Interest = Principal x Rate x Time.

• Compound Interest = Principal + (Principal x Rate x Time).

• Compound Interest = Principal x (1 + Rate) x Time.