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Starts with cautiioning against multiplying the factors back together and describes the zero product property to justify this warning. Then shows how to continue from the factored form to separate…
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Another demo on how to use the y-intercept to start a graph of a linear equation and then use the slope to find other points on the graph. It finishes with showing the line representing all of the…
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This describes how to solve each side of a compound inequality, then using the graphs of each part determine the interval notation for the entire compound statement.
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Gives the three possible answers that result from calculating a discriminant, then demonstratew with two different quadratic equations.
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Just an exercise in testing whether an ordered pair makes an inequality statement true when plugged in for the variables.
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Looks at the three types of graphs that can occur with a system of two linear equaltions in two variables.
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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…
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Demonstrating how to substitute several values for the variable in an inequality to see if they are valid solutions.
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Shows how to substitute values for the variable in a simple equation and determine what values, if any, make it equal.
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This shows the first method for factoring a trinomial where a is not = 1
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