What Is Algebra?
Algebra is a language that has its own vocabulary. It includes Rational numbers, Irrational
numbers, Real numbers, variables, expression, terms, coefficents and constants.
Order of Operation Please Excuse My Dear Aunt Sally
THis is a simple formula when dealing with adding, subtracting, multiplying, dividing, exponents,
etc all in on problem. The first thing that you start with is P, which stands for Parenthesis. Then next thing
would be E, which is Exponents. The P and E belong to one group where the M and D belong to the next, and the last group is
the A and S. The M stands for Multiply, the D for Divide, the A for Addition and S for Subtraction. If you follow
the order of operation, it will work everytime.
FOIL- First, Outside, Inside, Last. When dealing with problems like
(x+2)(x+3). First, x*x. Outside, x*3. Inside, 2*x. Last, 2*3.
Slope- this is always identied with the letter m. m always equals
rise/run, or rise divided by run. Many formulas can be written with this letter. For instance, to find the slope
when given (X1,Y1) and (X2,Y2) where X and Y stand for any number. To solve this, use (Y2-Y1)/ (X2-X1).
Slope Intercept Formula- Y=MX+B. The slope is always next to the x. The
b stands for the Y-Intercept, which tells us where to start on the graph of an x and y axis.