ACT Math Formulas

Front

What is the formula for the slope of a line?

Back

Slope (m) = rise/run

Front

What is the formula for the Area of a Rectangle?

Back

A = lw

Front

What is the slope-intercept form of a linear equation?

Back

y = mx + b

Front

What is the formula for cosine in a right triangle?

Back

cosθ = adjacent / hypotenuse

Front

What is the Pythagorean theorem?

Back

a² + b² = c²

Front

What is the formula for the distance between two points (x1, y1) and (x2, y2)?

Back

Distance = √((x2 - x1)² + (y2 - y1)²)

Front

What is the formula for the midpoint between two points (x1, y1) and (x2, y2)?

Back

Midpoint = ((x1 + x2)/2, (y1 + y2)/2)

Front

What is the formula for the area of a triangle?

Back

A = 1/2 (base * height)

Front

What is the quadratic formula?

Back

x = (-b ± √(b² - 4ac)) / 2a

Front

What is the formula for the circumference of a circle?

Back

C = 2πr