8th Grade Math Review

Front

What is the equation of a line in slope-intercept form?

Back

The equation of a line in slope-intercept form is given by y = mx + b, where m is the slope and b is the y-intercept.

Front

How do you find the value of a missing angle in a triangle?

Back

To find the value of a missing angle in a triangle, use the fact that the sum of all angles in a triangle is 180 degrees.

Front

What is an ordered pair?

Back

An ordered pair is a pair of numbers used to locate a point on a coordinate plane, written in the form (x, y).

Front

What defines a function in mathematics?

Back

A function is defined as a relation where each input (x-value) has exactly one output (y-value).

Front

What is the Pythagorean theorem?

Back

The Pythagorean theorem states that in a right triangle, the square of the length of the hypotenuse (c) is equal to the sum of the squares of the lengths of the other two sides (a and b): a² + b² = c².

Front

What is the area of a rectangle?

Back

The area of a rectangle is calculated by multiplying its length (l) by its width (w): Area = l × w.

Front

How do you calculate the slope of a line?

Back

The slope of a line is calculated by the formula: slope (m) = (y2 - y1) / (x2 - x1), where (x1, y1) and (x2, y2) are two points on the line.

Front

What is the difference between a rational and an irrational number?

Back

A rational number can be expressed as a fraction of two integers, while an irrational number cannot be expressed as a simple fraction.

Front

What is the formula for the circumference of a circle?

Back

The circumference of a circle is calculated using the formula: C = 2πr, where r is the radius of the circle.

Front

What is the distributive property?

Back

The distributive property states that a(b + c) = ab + ac, meaning you can distribute a number across a sum.