STAAR 8th Grade Math Formula Chart

Front

Slope-Intercept form

Back

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

Front

Area of Circle

Back

The area A of a circle is calculated using the formula A = πr², where r is the radius.

Front

Volume of a Sphere

Back

The volume V of a sphere is given by the formula V = (4/3)πr³, where r is the radius.

Front

Total Surface Area of a Prism

Back

The total surface area A of a prism is calculated as A = 2B + Ph, where B is the area of the base, P is the perimeter of the base, and h is the height.

Front

Lateral Surface Area of a Cylinder

Back

The lateral surface area A of a cylinder is given by A = 2πrh, where r is the radius and h is the height.

Front

Pythagorean Theorem

Back

In a right triangle, a² + b² = c², where c is the hypotenuse and a and b are the other two sides.

Front

Quadratic Formula

Back

The solutions to the quadratic equation ax² + bx + c = 0 are given by x = (-b ± √(b² - 4ac)) / (2a).

Front

Slope of a Line

Back

The slope m of a line is defined as the rise over run, or m = (y2 - y1) / (x2 - x1).

Front

Distance Formula

Back

The distance d between two points (x1, y1) and (x2, y2) is given by d = √((x2 - x1)² + (y2 - y1)²).

Front

Probability Formula

Back

The probability P of an event is calculated as P = (Number of favorable outcomes) / (Total number of outcomes).