Binary Operations
Addition, subtraction, multiplication, and division are binary operations.
Both Equations in a System Contain the Same Variable
Solving a system of equations using the substitution method when both equations contain the same variable.
Changing Rational Exponent Form to Radical Notation
Writing an expression in radical notation is detailed using several examples
Changing Scales of the x and y Axes
When and how to change the scale of an axis.
Changing Standard Form Equations to Slope-intercept Form
To change a linear equation from standard form to slope- intercept form, solve for y. The procedure is demonstrated several times.
Check Answers to Both Equations in a System
It's important to check the solution against both equations in a system.
Combining Direct, Joint, and Inverse Variation in a Problem
A problem combining direct, joint, and inverse variation is demonstrated and solved.
Combining Two Inequalities in One Statement
When and how to combine two inequalities into one statement, called a compound inequality.
Common Dimensions of Right Triangles
There some common right triangles in which all three sides are integers, such as a triangle with sides measuring 3, 4, and 5. Any triangle with sides that are multiples of these integers, called a similar triangle, you c..
Commutative Law for Addition
The commutative law for addition: a b = b a.