This video reinforces the idea that the area under the normal distribution curve is equal to 1.

# one

# Solve Linear Equations in One Variable (x+a)/b=c and (ax-b)/c=d

This video explains how to solve a linear equation by first clearing the fraction from the equation.

# Applications: One Step Equations Involving Multiplication or Division

This video explains how to solve three applications involving one step equations with multiplication or division.

# Solve a 3×3 System Using an Augmented Matrix on the TI-84 (RREF) 1 solution

This video explains how to solve a system of linear equations by writing an augmented matrix in reduced row echelon form using the ti-84 graphing calculator.

# Solve a 2×2 System Using an Augmented Matrix on the TI-84 (RREF) 1 solution

This video explains how to solve a system of linear equations by writing an augmented matrix in reduced row echelon form using the ti-84 graphing calculator.

# Factor a Quadratic Expression with Leading Coefficient Less Than Zero by Graphing

This video explains how to factor a quadratic expression by determine the zeros of the related quadratic function.

# Factor a Quadratic Expression with a Common Factor by Graphing

This video explains how to factor a quadratic expression by determine the zeros of the related quadratic function.