
An example that is easy to combine with subtraction, in this case, because the two fractions have common denominators. However, be aware that there may be a way to simplifying the answer further. …


A quick justification of dividing fractions by multiplying by the reciprocal of the second fraction in the division followed by an example that involves reducing the common factors in the numerator…


A multivariable fraction that is reduced by applying the quotient rule and the definition of a negative exponent.


This demo discusses how to set up two equations to solve the situation described, and then choose the best method to use to solve for each of the variables.


This shows the method of using the pointslope form to write the equation, then solving that form for y to get y = mx + b.


The informaton given here can be entered directly into the y = mx + b or slopeintercept form. Then the yintercept is used as a starting point where you apply rise over run to the given slope to…


This shows how to decide whether you are seeking a maximum or minimum value for a quadratic function and then how to find the vertex of i ts parabola to deternine the xvalue that locates the min…


This one demonstrates how to eliminate the rational parts of the equation as usual, then gather the terms with the chosen variable on one side of the equal sign so that it can be factored to one…


Describes how to deal with denominators that are simply opposite in sign when adding or subtracting fractional expressions.


A quick run through the use of a^2 + b^2 = c^2 to find an unknown side of a right tirangle if we know the other two sides.


Demonstrates what happens when the F.O.I.L. method is applied to multiply two binomails of the form (a + b) (a  b). It's special circumstance that allows a short cut.


Talks about how to interpret the words to create two equations, then solves them together using the elimination method, making opposites of one variable's terms sot that the equations can be…


Looks at the three types of graphs that can occur with a system of two linear equaltions in two variables.


This demonstrates testing possible answers to a system of two equations to see whether they are truly answers or not. Note that each answer has to work for both equations, but if it doesn't…


Shows how thits form is simply the same as y = mx + b, and then writes the slope and yintercpt down. It ends with using these to graph the line of points that satisfy this function.


Shows how to convert Ax + By = C to y = mx + b then what and why the slopes for parallell and perpendicular lintes are what they are.
